Personally I have seen groups, particularly social dems, who've used abstract "internationalist"-sounding slogans to conceal what is, in practice, "great power" chauvinism. I can think of many examples of this, particularly in relation to Israel. An example which I remember seeing discussed on revleft was the British AWL, which iirc came out with the slogan "No to Hamas, No to Israel" in the wake of operation cast lead. I think the leftcoms here will concede (I hope) that the AWL's perspective re Israel/Palestine isn't "internationalist" at all, but is in fact pro-Zionist.