Well, you're an American, right? So I blame you for foisting Trump on the world. Not to mention for the US's production of greenhouse gases.
Are you also white? Can I blame you for slavery then?
You realize this thread is talking about a group collectively, right? So yes, you can absolutely blame America as an entity for foisting Trump on the world. Why on earth couldn't you? People seem to be unable to separate individuals from the actions of a group.
As far as a group goes from a governance standpoint the baby boomers have been an unmitigated disaster.