One example off the top of my head: Indian caste discrimination in Silicon Valley [1][2]. Cisco was even sued by the state of California for such discrimination [3].
[1] https://news.ycombinator.com/item?id=24952698
[2] https://news.ycombinator.com/item?id=24552047
[3] https://news.ycombinator.com/item?id=23697083