I do believe that in the present scenario, US and Eueopean authorities have become much more concious in order to prevent any mishap. At times it does create nuisance to passengers and to Asian passengers to a greater extent.
However I faced a racist attack without any security issue at Heathrow in June this year. Just before i was about to board flight, a female security officer looked at my laptop and commented that at times they see such people carrying laptops about whom they cannot even dream off possessing one.
this was the kind of treatment that I received when after my 2 yrs of stay in UK i was returning back, finishing off my studies.