chelsea fans are just generally thugs
Can you hear yourself? Perhaps you should try saying this aloud as a football fan which I even doubt you have a clue about football and fanbase. Tell me any club that has fans that are all absolutely peaceful? Next time try and be objective with your statement and not allow your hatred for the club make you insult the entire club fans just because a few ones attacked violently.
I won't be surprised if you're a fan of one of those club that finished 15th on the table this season with no slot for any European football competitions next season.

Don't prove him right please as I don't want to separate fight here. But let's be honest, are those fights really necessary? Football is supposed to be a game that unit people and not divide, why the clash?
I don't know if I'm wrong but you will never hear fans of Arsenal, Barcelona, Bayern Munic and other decent clubs fighting this way, always clubs that are desperate for trophies. I think Chelsea, Real Betis and all the clubs whose fans are infamous for fighting should spend some money in educating their supporters on what football really stand for.
best place to upload photos First, please point me to a club that's not desperate for a trophy in any competition? Maybe you not aware that Chelsea is one of the most successful clubs in Europe when it comes to trophies won. The image above which I took somewhere online would do justice to my claims.
I don't encourage football fans being violent , it's an attitude I abhor in all entirety. But we can't completely have them not happening especially for clubs with one of the biggest fanbase in the world. This other clubs you mentioned may not even have half the fanbase Chelsea has worldwide, hence their non loud activities but not that they don't get into fights as those clubs with much higher fanbase. Do your research, mate.