As I mentioned in another thread, the Islamic community in the UK is going to be put under extreme pressure from a number of sources. Some of this will be at street level and will be rough justice as the perpetrators will see it. Tit for tat escalation seems possible.
I don't believe these deaths are going to be easily swept under the carpet in a wave of emotive hashtags by millenials and celebrities. I think this has sowed the seeds for a Bloody Sunday type reaction as recruiting sergeant to a more organized and paramilitary response to terrorism in the name of religion.