Bakit nga ba bumababa ang tingin ng ibang lahi sa ibang mga pinoy kundi man lahat?

Gandang Araw po! I was just chatting with friends and few acquaintances (a few of them are foreigners)a coule of days ago, at sa aming paguusap,nakarating kaming sa discussions on "pinoys" they actually admire the "Kabayans" for the being hard working people, very hospitable and blah ,... blah blah...however, the question was raised. bakit mababa ang tingin ng ibang lahi sa ibang mga pinoy(kundi man lahat)? i pondered on this question and came up with my own asnwers..
can you tell me few reasons if you can think of one...