It seems you are the one struggling with your own native language, since the part after that "because" has no casual relation to what you were saying about not feeling worried about your speech.
Gramatical issues aside, the fact that authorities are more concerned about social media posts than little girls having their anus ripped by subhuman scum tells everything about their (and your) moral compass.
You can disagree with me but I'm an English teacher with a degree in linguistics, so my grammar is probably a stupid line of attack. There's nothing wrong with having "because" (as a subordinating conjunction) start a new sentence for stylistic reasons. I'm assuming you meant "causal" relation and there clearly is one; maybe it's not your native language.
Anyway, I can see my post wasn't popular. I wonder how many of the responders aren't British. I could go out on the high street right now and protest Muslim rape gangs all I want. It's if that protest turned into racial hatred that I'd have an issue - again, it's easy not to do that.
People like Tommy Robinson are scum, and not very bright scum at that, as they could make their points without falling foul of the law.
Edit: that's not to say the police/prosecution didn't fail to do their job properly because of concerns over racial harmony, let's just not get carried away extrapolating from that and imagine that we live in some dystopic nightmare where we're scared of breathing a word of dissent. The strength of America's free speech laws is kind of unique to it but that doesn't mean other countries have none.