Horrendous events like this really do bring the mouth breathers to the surface.
As a Catholic of Irish descent living in the greater Glasgow area during the 70s and 80s when the IRA was bombing Birmingham, Manchester and Brighton... I will never, ever hold Muslim people responsible for the hideous acts that are carried out in their name, in the absence of their consent.
Just like the Irish issue, the Muslim issue has been caused by UK foreign policy. We can't expect to invade foreign countries and murder innocent members of the population and expect no repercussions. Murdering innocent children is many many notches below the belt, regardless of whether they are murdered by nail bombs in our backyard or government issue machine guns many miles from our safe, insulated homes.
The immediate solution is for the police and army to protect us, but the long term solution is a political one.
Obviously the ultimate solution is the absence of religion in our lives, but unfortunately people are far too stupid to accept this and will remain so way beyond my lifetime.