If you're talking about the Krakus mass shooting that happened a couple of years ago, it was justified. Not just for the sake of killing, it was retribution for all of the horrible things the Russian Federation has done. Same with Putin's regime along with those that vote for him, pay taxes to him and join the army willingly. Their actions have resulted with almost more than a million of deaths of innocents ever since the collapse of the USSR. Let it be in Chechnya, the Middle East, Afghanistan and many other places, even in Europe recently. Their people live in peace and are happy to kill innocent people while others suffer. So they need to be taught a lesson that they too bleed red, that they too can feel pain. They need to know that their actions of air striking innocent people half across the world has consequences. Their own actions led to that attack happening. The whole attack could have been avoided if Russia had stopped intervening into the mess in the fucking Middle East for the sake of Jews, but no. They have to continue doing that, so they will pay the price. The same thing goes with the United States, with 9/11, and with Europe, and the Bataclan, and many others. But if you're talking about regular mass shooting is done by TCC cacaots and all of those other scum Those are completely horrible. I don't advocate them at all But the worst part is that our intelligence agencies will willingly sacrifice us and let us get shot to death By these scum because they're responsible for the rise of the true crime community and all of this satanist nihilistic terrorism