The Belleville neighborhood in Paris is known as a place where Chinese, Jewish, Arab and African communities generally live together peacefully. But tensions are on the rise.The multicultural neighborhood has reached a tipping point. Chinese residents are protesting rising crime and pointing the finger at immigrants from northern and sub-Saharan Africa - who accuse their Chinese neighbors of isolating themselves. Meanwhile, the question on everyone's minds is: Where did these invisible divisions come from - and why did they crop up so suddenly? Many blame French President Nicolas Sarkozy for the troubles and say he's exploiting the conflict to justify his restrictive immigration policy.