sometimes if it's a peaceful protest then it will be less likely to cause any thing like riots and stuff but as seen on the picture which looks like a newspaper clipping but when you ate protests waving weapons and threatening to harm other people especially innocent who just got caught up in the protest and end up getting hurt... so I wouldn't say all protests are bad depends on the reason why they do it but i guess as a whole i can see how people would say that they are dangerous and a danger to society.