I mean, it's a comment on a thread in a sub called "punchable faces", the thread links to an Imgur image of Pao labled "ching chong ding dong", has 2,400 upvotes.
Can you point one which wasn't downvoted to oblivion? This one is pretty bad example to give, when you're trying to convince people that "thousands" were of this opinion. I really recommend reading comments in that thread.
I did see lots of posts saying things like "Ellen Pao is LITERALLY Hitler", but not any overtly racist ones that I can recall.