"It's not surprising. People get angry when they don't understand something, people get angry when they don't agree with something, instead of having a conversation with people.
"Instead of being curious, asking questions, wanting to get involved, wanting to know how they can make a difference; the first line of defence is for them to get angry and attack and that's what happened."
It's awful that someone attacked three people, and disgusting to spit on them. Really vile.
The above quote - that is true for some people - I've noticed it more with male people - but when I don't understand something I ask questions. I've seen that be true of many women too. I've actually found that it's the questions that receive a violent response (to be clear, I'm talking about typing them on online forums, not screaming them at people). So that doesn't apply to everyone and indeed I've seen a lot of male people get angry and attack. I would hope that they are asked not to by event organisers as well.