Obviously, one salient example of this kind of thing is people who film nonwhite immigrants in Europe committing violent crimes. The anti-immigrant political agitation currently happening in Belfast was sparked by the viral promulgation of cell phone video of a Sudanese asylum-seeker slitting the throat of a random white person (video footage that is actually already difficult to find in its original form by searching); if a law existed that would allow the state to jail "online streamers of violent crimes and cruelty", I have no doubt that many people within European criminal justice systems would attempt to use that law against the bystanders who originally took the footage and/or promulgated the footage, in order to try to prevent the kind of public unrest that is currently happening in Belfast.
Till now nothing could be done about them as they claimed it was dramatizing only. No law prevented streaming fake-rape (and streamers were smart and implied the act while being off camera, so anti-pornography laws didn't apply)
Such streamers were wildly popular with youth, so crackdown happened. There's now law to back state versus that, but rest assured no one will try to pick people off the street. Polish law is riddled with laws allowing easy punishment but there's no will to exercise it.