Blazing Frank Strikes Again!
Do not, I repeat, do NOT lionize this man in any way. Do not make him out to be a hero. Comment soberly, frame the proper narrative, draw the necessary counter-feminist object lesson, but make NO statement that could be construed as approbation of what he has done. You need not condemn Mr. Matusciewicz in set terms, but do not voice approval!
Briefly then, don't be a loose cannon-mouth.
You will likely meet commenters on various websites who will roar their praise of Mr. Matusciewicz and his sanguinary actions. These commenters may or may not call themselves "MRAs", but that is what they will be called by others. You should immediately confront these commenters with the accusation that they are feminist provocateurs -- which many of them indeed are! In fact, if you can recruit a posse, you can make the rounds and mob these people in a spectacular way that will register sharply on the public mind. Remember, you must specifically denounce them as feminist provocateurs, since you wish to make it clear for the record that you are not a feminist yourself.
If you wonder who Blazing Frank is, you will need to read the following: