What can you possibly gain from incessantly arguing. I don't believe that there was point jailing stop oil protesters for throwing soup over a painting.
I don't know the context of setting fire to a bin or retweeting to give an opinion. If someone has set fire to a bin in their garden, no, they shouldn't be jailed. If they've set fire to a bin and pushed it into a crowd of police, then yes they should be jailed. If someone has retweeted an opinion on a film, no they shouldn't be jailed, if they've retweeted a call to physically harm asylum seekers, yes they should be jailed.