Well we saw how this worked out for Yasser Arafat, Shimon Peres and Yitzhak Rabin in 1994..
However generally, the idea to influence people to do something positive is not a bad idea. Or to place them in the spotlight, as a symbol for others.
I guess Dylan is not the badest of decisions; there may be other/better singers or bands, but with that intentional political influence? Ok i still think there are others who deserve it more.
OT
The new geman mob despises all though, even when it's positive. Fury, hate and deliberate misunderstanding is the hype here, you just have to choose your subject and then voice your (self)righteous complaints. See Facebook.
Ranting has become a lifestyle of itself