Talk politics.

I think it is unfortunate that "doing something" almost always reduces to "sending the military", so "doing something" arguments always end up arguing about war. But thankfully there is a broad spectrum of things one can do to "do something". Of course, there are just blatant limitations and sometimes you're busy with two other things so you can't do the third or fourth thing, but that's just like choosing which charities to give to in a sense. OMG YOU DON'T DONATE TO AIDS RESEARCH?! WHAT'S WRONG WITH YOU?!