Time to show these scum we aren't scared we are angry
A demonstration that the UK will not stand still for this but will strike back will have to be made sooner or later or else inaction will embolden either the same perpetrators of 7/7 and/or today or else the IRA or others to escalate to even worse terrorism.
Sometimes one just needs to THUMP a bully solidly on the nose.
Methinks that time is now.