pettitte lease down the demonstration saying it was being organized by neo-nazis and a soccer hooligans. >> the court ruled they should have the right to assembly as long as they remain nonviolent. 50 people were injured by the same group three weeks ago in cologne. they said organizers must take extra security measures. the radicalization of european muslims is not just a topic firing up soccer hooligans. civil society groups are trying to figure out what is attracting young muslims to islamic state as well as ways of engaging with them. the founder of the institute for strategic dialogue talked to us. >> it is estimated that roughly 500 fish young muslims are fighting in syria. you are an expert on radicalization, how big is the problem in europe? >> official estimates range from 1005 hundred to 3000 foreign fighters. >> is this a growing trend? >> we certainly see it on the rise will stop there have been three surges in recruitment to islamic state. the first surge went with the humanitarian call to arms to oust bashar al-assad and stop the killing of innocent people. the second came

>> can a grand jury, can a pettitte jury, can a judge do that?the rule of law says you must be impartial arbiter of the facts. that's why i say it's the prosecutor to decide to put it to the grand jury and to have a group of citizens, a citizens panel to decide the facts, the evidence, and what to do about it. >> one of the voices calling for calm is michael's father, michael brown, senior. he and his wife, michael's mother, spent the day giving out free turkeys at the housing complex where their son was shot. let's hear his plea to the people on the streets. >> no matter what the grand jury decides, i do not want my son's death to be in vain. i want it to lead to incredible change, positive change, change that makes the st. louis region better for everyone. >> that obviously is from the heart and your heart must go out to him. do you think this positive change can come, can be the change that he is calling for? >> i don't want to presume the facts. i don't want to anticipate what the jury may render or may or may not do. what i will say is two m