We are told never to discuss politics or religion so - what if the hiring authority asks you about these topics, specifically? Depending on the publication for which you are interviewing, you may be asked to comment on politics or some other hot button topic. This situation is where pre-interview research is pertinent because to respond appropriately; you need to know your audience. Discuss what political issue is interesting you the most right now, and discuss an opinion from both sides of the coin.
"One issue on the political agenda is the intensification of social movements such as #metoo and #blacklives matter. We have seen activism flourish over the past couple of years, and it's' continuing to grow. I hope to see this level of involvement increase for some of these world-changing movements."
"Gun control continues to be a political issue that I cannot research enough. Both sides have very credible arguments, and I love to research and learn about ways that we could come to a happy medium for everyone. I have researched gun laws in Australia as well and am very impressed with what that country has done concerning guns and weapons law."