4. While I understand the sentiment, this is unacceptable behavior.
Imagine if this was the other way around. People would be going nuts, not posting jokes and giving support to the attackers. Vigilantism is always wrong, so I've been told many times here, we can't make exceptions.
Suppose these same guys attacked the Black Israelites or another black racist group?
There might not be enough popcorn in the world for that thread.