I have something like this on my Prius. Its just a black flag that doesn't take up the whole back panel.
It's just a flag. It has absolutely nothing to do with the civil war and doesnt have any hidden meaning. I didnt want a color flag because it would stand out.
I very much dislike trump, and in no way does the American flag represent him in my interpretation of it. For me, the flag just represents the sacrafice made by military members and the ability of the people to make meaningful changes to our country.
Im also understanding that the flag does not represent that to many people, and does represent an insitution of racism. I just hope those people understand that it doesn't mean that to me.
It is overwhelming. Just take it slow. Dont ban yourself from non open source things. Maybe try adopting one open source thing at a time