Islam critiqued finds fault with the prophets; blood on the hands of the messengers?

In answer to the video "Muhammad did it. Therefore it is not sinful."

As amply shown in a previous video to this same youtuber, the tolerance of the prophet, his patience and forbearance were indiscriminate and touched people from all social spheres

“Do not be mere imitators, treating well only those who treat you well and doing wrong to those who do you wrong. Instead, accustom yourselves to do good if people do good and not to do wrong if they do evil”

  Aisha said

"The Messenger of Allah did not take revenge for anything against himself, but if the sacred law of Allah was violated then he would take retribution for the sake of Allah".

That is why one only finds the kind of reports as those concerning Asma bint Marwan who wrote poems that targeted the prophet personally, among the weak and discarded narrations. As a prophet of God and ruler, he was nevertheless not one to adopt the type of passivity that would result in the merciless becoming brazen and taking advantage of any apparent weakness. From that perspective, we can begin to understand why he sanctioned the execution of some people, and tactically fought others, though he may have wished that this could have been avoided.

An example to corroborate would be that of Kaab ibn Ashraf. Following the Muslim victory of Badr, the idolators and the Jews of Medina felt that their political position was greatly diminished. Only 2 years after his migration, the Prophet of God had managed to break the traditional pattern of power distribution in the desert. The enemies of Islam would meet clandestinely and encourage the composition and recitation of divisive poetry. Kaab ibn Ashraf, a Jewish chieftain of Banu Nadhir, was a poet of considerable fame and he used to recite in the gatherings fiery poems inciting the people to rise up against Islam. This was a clear breeching of the Medina covenant of peace with the Muslims, non partisanship which eachother's enemies. ibn Ashraf's particularity as compared to the other non Muslims and hypocrites that secretly disliked Islam and conspired against it, is that he openly joined the Meccan ranks with whom the community was at war, becoming a propaganda tool that composed eulogies mourning the Meccan chiefs slain in the battle of Badr and defamed Muslim women. The closest one can come to the kind of impact this kind of poetry had in Arabian tribal life in those days, is to remember the role propaganda played during the world wars of the 20th century, more particularly the 2nd one. The chief propagandists among the Nazis were regarded as top priority targets by Western authorities. The issue here is thus not that of low-level disparaging comments and mockeries, rather the kind of criticism with deadly ramifications. The Quran and hadith contain many instances of the prophet and the Muslims being the targets of mockery and ridicule, both in times of political weakness and strength, yet neither responded in kind nor retaliated violently. The Quran for instance in sura tawba relates how the Medina hypocrites would engage in injurious talk about the prophet, and this at a time where the Muslim community had become powerful. The only response they got from the prophet was that he socially ostracized them, refusing their charity donations, and leaving their fate to Allah in the Hereafter 

9:66"If We pardon one faction of you - We will punish another faction because they were criminals". 

He would even pray for the forgiveness of some of them, only to be rebuked by Allah for his undeserving empathy 9:80,63:6. Even so, the Quran would repeatedly call them to repent, and that God may show them mercy 

33:24"That Allah may reward the truthful for their truth and punish the hypocrites if He wills or accept their repentance. Indeed, Allah is ever Forgiving and Merciful".

As to Kaab, his animosity was such that it is said the verse 4:51 speaking of Jews believing in idols alludes to him, when he accompanied a delegation from Medina to Mecca in search of an alliance against the Muslims, and publicly bowed to the idols to reassure the suspecting Quraysh 

"Your are people of Scripture and Muhammad has a Scripture and we are not completely sure that this is a scheme that you devised. So if you want us to go along with you, you have to prostrate to these two idols and believe in them". 

But being a coward he never attended the battles himself, preferring to plot and incite behind closed doors. His role in galvanizing the Quraysh prior to the battle of Uhud is well known, his wife herself is reported to have warned him that his life was at threat because of his actions. Although the prophet said that Kaab was deserving of being put to death since he should be treated as a combatant, he nevertheless did not plan the execution. It is to be noted that any modern government seeking to preserve the survival of its people in times of war, would look to target specific opponents whose death would have a more significant impact in the long-run in terms of avoiding further bloodshed. He was thus incited out of his hiding place and killed, which successfully prevented an all out war with the Bani Nadir. Other opinions say his assassination occurred after the battle of Uhud in response to an attempted murder of the prophet.

The critics of Islam wont find the kind of cold blooded, arbitrary and ruthless assassinations they try hard to attribute to the prophet and even if they succeed, which they wont, then it still takes nothing away from Muhammad's claim to prophethood, judging by the standards of the true prophets of the Bible, including David who assassinated an innocent man for the sole purpose of marrying his wife and yet it did not diminish an iota from his legitimacy as a prophet.

The fact is that so many factors in the prophet's life went against displaying any sort of positivity and mercy that one can only conclude that he had been preserved and guided by the Almighty from turning into an evil despot; never knew his father, hardly enjoyed the compassion of his mother, lost his grandfather, and then his uncle and dearest wife simultaneously, witnessed every single one of his children die save for one, who was treated like a menace and fugitive after decades of building a flawless reputation among his people, on top of that physically abused until he would faint, starved for years by his own people, and faced countless campaigns of character assassination, directed towards him and his household, driven out of his home, unto a foreign town only to find hypocrites there awaiting every opportunity to betray him, then watching assassination attempts against his life unfold regularly, as well as the murder and mutilation of his relatives and companions. Who could in such circumstances persevere and rise beyond negativity, displaying mercy, justice and empathy besides one divinely guided?

The Prophet never punished out of mere retaliation for a personal slight or injury. All his punishments, of believers and unbelievers alike, were for crimes committed against the public weal or infringements of the promulgated law; and even here his life contains acts of clemency in which he put mercy above justice. In 4:140 it says

"And indeed He has revealed to you in the Book that when you hear Allah's communications disbelieved in and mocked at do not sit with them until they enter into some other discourse; surely then you would be like them; surely Allah will gather together the hypocrites and the unbelievers all in hell".

This is a Medinan verse in which the prophet isnt told to forcefully silence the critics, even those mockers of the religion. He is simply to gracefully turn away from them and leave them to their own shamefull talk. A similar verse was revealed in Mecca 6:68.