I agree NJ.
My own particular take on all this is that today's horror show could well be a catalyst for a spate of tit for tat attacks. Nothing as heinous, but violence none the less.
Recent election results have certainly given the government food for thought and terrorist atrocities aside there appears to be a groundswell from the UK public that says: Enough is enough, we can't let everyone from every oppressed nation within our proximity nor eastern Europeans into this country in such vast numbers any more.
A combination of the two will conspire to further heighten anger, resentment and tension. It's just ripples at the moment, but will become a wave before long and, if unchecked and problems and concerns are not addressed it will become a tsunami within a decade.