There is a tension here. If you expect your kid never to have contact with the general community, never plans to vote, never will stumble in a pandemic where he needs to understand the health direction – then he does not need to listen to anything political. Otherwise, there is a danger that he will be caught into some modern avoda zarah the way previous generation of Jewish kids were enticed by communism, etc. You may want to introduce him to politics with some background and your own views that help him develop a thoughtful approach.
One way: you start discussing political position connecting them with Jewish values on what is truth, hesed, respect for other people. etc.
A way for older kids: watch or listen together with him, discussing and commenting. better to listen to something that has opposite views. I tried radio debate between Obama and Romney. Kids did not like that Obama promised to hire 100,000 math teachers… With later debates, I chose video as faces showed more than words. Anyway, it is more important to teach the kid values of honesty and reasoning than simply convince him to despise a certain position that you hate. The latter would not give you a long-term vaccination effect.