I'll group these dinner party topics in order of safety from political discussions.
This is helpful because some people relate everything to politics! For example, you could mention ToysRUs has closed in the US, and then someone will say it's Trump's fault, someone else will say it's Obama's and yet another person will blame it on the Clinton administration. In reality, the situation may have nothing to do with any of those factors. Or at the least, there are factors much more major than any political factors.
So, I like to have a go-to list of conversation topics. Most of my friends don't care one bit about politics, same as me, but you never know when someone else might go off on a political rant, so here are the topics.
Safest:
Sports
Crafts
Work
Home decorating
Most hobbies
Movies
TV drama/comedy (but not news)
Fiction books
If there is good music playing at the dinner party, find something to say about it
Less safe
Documentaries
Non-fiction books
Least safe
News and current events
So basically, I think it's pretty safe to talk about most things except news and current events.