Comment by lordgilman

The Zhou Yongkang incident happened over a decade ago, it happened in roughly the first year of Xi Jinping's tenure, Zhou Yongkang was a supporter of the also-purged Bo Xilai, and while he was still in power he ran the department responsible for internal security. I don't doubt the guy was corrupt but this is exactly the sort of target you go after if you want to maintain your own grip on power.