I'm sorry but are you brown? if not why does this concern you? have you felt any racism directed at YOU?
let me guess - you're not adapted to the local culture because you couldn't be bothered to learn cantonese and you don't bother hanging outside your expat circle so you've felt alienated from the locals and you are now trying to label hong kongers as "racist" and "intolerant" because you were the one who alienated the local populace in the first place by not learning their culture?
I've never heard of racism against whites/expats that knew the local language...take a hint?
It's like bringing a windows laptop to a workplace full of Macs, don't expect to fit in...