"Peaceful" does not mean destroying the streets, setting cars on fire, throwing incendiary devices at the cops, or bullying those who don't agree with you.
There are the CDRs, PicnicxRepublica, Omnium, ANC,... And probably many more.
In fact there are suspicions about tsunami not being "good enough" by some independentists.
Don't attribute to one what comes from another.
Anyway, there's a huge leap from riots (and, please, look at riots in other countries...) to terrorism.