@maxdancona,
I don't think there's any moral/ethical/political contradiction here. You may feel it, but I think it's just requires a shift in perspective.
You can both be proud of soldiers and despise the war.
You can support someone's choice to kneel during the anthem, but still stand yourself.
You can love your neighbor even if you disagree with them.
You can also just do things to go with the flow sometimes and not have to worry about it changing your morals.
Good luck with your son and good luck at your home day to day. But don't worry about losing your beliefs/morals/ideals just because you don't kneel during a military parade or challenge your Trump supporting neighbor when they bring you brownies.