There can be a "political" bent to comments made by some there. An Appleseed is going to tend to attract a pro-2nd Amendment, anti-gun-control, libertarian crowd. If you disagree with such views, you could choose to not go, or go and listen while saying nothing, or try and disagree vocally. Except for the last option, I doubt it is going change the quality of the instruction. I also doubt most of the instructors would change how they instructed even if one disagreed vocally.

The only issue I've seen specifically supported by instructors is the against gun control. Not a big surprise at a rifle event.

I was given something at an Appleseed, from a participant - not an instructor, that I found almost, if not, offensive.