Wow. So if you read the article about slavery in India, you would see that there was no slavery in India. Most of the slavery involved Indians who were enslaved by Central Asian invaders. 

But you can't read, can you?

As for western slavery, do I need to elaborate? Brazil had legal slavery till the 1880s. The slave owners were from European countries. Just like in the US, Canada, etc. 

As for genocide, a riot is not classified as genocide. Trying to wipe out a community is. Like the Natives in the Americas (wiped out by the Spanish, British, French, etc). Or the Jews in Europe (most Europeans very helpfully hunted the Jews for the Germans - including Ukrainians, Poles, the French, the Dutch, etc.).