i recomend u to listen to some of this stuff:

.orishas(a hip hop crew from cuba)
.rodney p(member of london posse,a very good uk mc)
.pyramoya
.active member(the leading hip hop crew of greece,www.lowbap.com)
.mc palaistine9really hard to find his cd)
.loop troop
.immortal teqnique
.phoedra(from germany,they got a very talented producer)
.non phixion
.jedi mind tricks
.extrimists
.jehst
.shi
& a lot of other stuff.if u have any other crews to recommend with social/political rhymes,just do it.