Why do the normal moslems fail to condemn the "extremest" moslems and their bloody jihad across the world?

Yes the 'peaceful' muslims silence is deafening, maybe they're too busy keeping it internal we don't see all the wonderful work the muslim leaders do within their own community. Putting up all of those signs in Arabic, demanding council money be used for their culture. Oh yes i can see how tirelessly these 'community workers' toil.