I am unaware of what Muslims are doing in London.
The few examples you said- I ain’t completely informed about them.I do condemn Owaisi’s thoughts. A political leader he is. I did watch Zakir Naik’s one of the live session. He is a good orator, a manipulative one, but his words are not hatred in that session.
But, I believe we could endlessly give examples in vain unless we are open to accept. Also, I think, you might have experienced something really bad — since you hold a strong opinion for the whole community.
I know this one thing, Love/Hate is one of those feelings which are both contagious and reflective — it spreads & comes back.