Fake news is a big issue. It is hard to distinguish between what is real and what is not.
The next big issue is that the medias are not very honest and their point of view depends on who owns the media or who pays for advertisements.
Fake news and people who are exposed to them lead to fake opinions. This leads to real conflicts.
Before you start any conflict, ask the other person what sources they use.
This might show to you that the effort to convince someone might be greater than the reward and it is far better to move the discussion from opinions, back to the sources, and just asking the other person to read your sources would be a big win.