I was with you until you started to point fingers Shaista. True Saudi Arabia could be doing more to combat extremism and publishing a report on terrorist funding is okay but neither is going to stop the majority of these instances which are conducted by 2nd generation immigrant youth radicalized over the internet. 

Your point that the Manchester bomber and this week's terrorists were known to police is a good one. Our challenge in a free and open society is what do you do about it?

Police need evidence to arrest someone. Not just a tip on a hotline. Erroneously arresting "the usual suspects" will only alienate the Muslim community.

So by all means reinstate the 20k police but make sure you know what to do with them. Simply walking a beat won't help when cars are weapons. We need a better strategy. Got one?