I'm well aware of the fact that the progressive gun control crowd are a sullen and touchy group, but some are really really sensitive to any sort of criticism, and even humor.
On another site was debating American gun politics with a progressive gent from the UK, and one of my replies must have set him off something fierce. His one reply to me was a single word, bollocks, in which I responded by saying nevermind the bollocks here's the Sex Pistols! He done blocked me after that exchange, lol. Some folks have no humor.