I've noticed that getting offended about stereotypes and word choice is a very American thing to do – and also shared with other cosmopolitan English-speaking areas. For most groups X, "X-Americans" are more likely to take offense than plain X. So you may see foreigners speaking about stereotypes – those applying to their own groups or others, in jest or debate – with a level of frankness that triggers the 'racist! must! object!' reaction in acculturated Americans/anglophones. Of course, YMMV.