Australia ""If you don't love it, leave" - Racist?

Am I missing something here? Just read this on BBC:



http://ift.tt/1w49k6p

Quote:

A singlet bearing a slogan seen by many as racist has been removed from supermarket shelves in Australia after it was "inadvertently" stocked. The vest with Australia's flag and the slogan "If you don't love it, leave" was on sale at two Woolworths stores in Queensland and New South Wales.

How is that racist? The BBC article must be missing some important details because that seems like a perfectly valid sentiment to me.



Can an Aussie help me out with what's going on here?

Australia ""If you don't love it, leave" - Racist?