Complex sentence: Surrealism as a political force developed unevenly around the world, in some places more emphasis was on artistic practices, in other places political and in other places still, Surrealist praxis looked to supersize both the arts and politics.
Split into simpler sentences: Surrealism as a political force developed unevenly around the world, in some places more emphasis being put on artistic practices, while in others political political practises outweighed. In other places still, Surrealist praxis looked to overshadow both the arts and politics.