May I add my voice to the choir
I'm sure its just as effective as marching...
To the governments of the world:
No more data sharing. Snowden did not do a bad thing. You use terror in an attempt to manipulate public opinion far more frequently than those you call terrorists. You have done far more to destroy my freedom than any Islamic terrorist. There are many murders, every day - they are all tragic, not just those politically motivated. You can't beat terrorists, except by ignoring them. I shall ignore you and your requests for more power and encourage others to do the same, as I would the Islamists.
To the security services:
A bad reputation and lack of trust is a very difficult thing to shake. The only way to protect your reputation, is not by covering up your wrong-doings, but by only doing right. When nut-jobs come together to kill people, knowing they too will likely be killed, there is precious little anyone can do about it except grieve and refuse to be manipulated. I don't really care if you don't catch them all - I can't realistically expect you to. Put your ego over your job aside - we recognise that the occasional murder it is a cost of freedom.