As Ibn Taymiyyah (r) also said: the one who doesn't enjoin the good and forbid the evil is either weak or he is a coward.
I refuse to accept the fact that people should be given a licence to insult our Messenger, especially due to our passiveness and silence. This in itself is a form of approval of these acts.
It is not befitting for a Muslim to remain silent and become passive when his religion, his Messenger and His Lord are in the frame of discussion. Iman in Islam is belief in the heart, statements on the tongue and actions of the limbs. You are obliged as a Muslim to stand up and confront these situations, to denounce them and fight against them in your the heart, in your words and in your actions. It is not permissible for any Muslim to stand down and withdraw when he has the ability to fight back.
You can either grab the bull by the horns and stand up for what you believe in, or take your place among the weak and incapable who are the most useless of people in every society.
Humanity has moved on since the days of Ibn Taymiyyah. Humanity does not function on the basis of the sword any longer, but the brain.
If some idiot makes a video clip about someone he does not like who is long dead, does that mean others need to automatically agree and accept this idiotic view? Is tacit rejection a form of approval? Do I approve of being charged too much by a restaurant or tax authorities because I don't immediately kill them? Hardly. So why not use a more sophisticated view than violence and wrestling with bulls - which you will loose, by the way.