Are all white people responsible for keeping the "bad" white people in check? This is a completely silly and unrealistic expectation to hold people to. Most Muslims just want to do their work, earn money, pay taxes, and live quiet peaceful lives. They are under no obligation to go around apologizing for every wrong thing other Muslims do. You seem to have this impression that the Muslim community is like a beehive that all think and act telepathically. Muslims in europe come from all sorts of background, africa, mideast, balkans, asia, etc. There is no unified community that you seem to think exists.
This is a lie. As i mentioned above there is no such thing as a monolithic or organized "Islamic community". The grooming stuff in the UK was done by Pakistanis i believe,...are Yemenis, Somalis, Egyptians, responsible for that? You just lump the Muslim community into one big category in a way that doesn't make sense.
Muslim civic organizations, mosques, don't protect bad actors in any way, in fact most Muslim civic organizations have an extremely cooperative relationship with their host governments and they typically bend over backwards to condemn extremism and other misdeeds done by folks in their community. Whether their condemnations gets adequate media coverage is a completely separate topic (they don't).