Postman, you and I are on the same page for sure.
I think it's important to be able to explain what you are saying to your kids but tell them that the activism that you are involved with has to be of the quiet sort; telling them that educating your peers is also a very important TYPE of activism! It's just the only one that is available to a home grower at the moment.
Especially when you have children, you really do give up some of your options! They need to know that your first responsibility is their safety and that when they are 18 and living on their own, THEN you can even consider putting yourself at risk of prosecution because you no longer have the first duty of providing for their needs.
This is a good time to teach them that SOOOO important life lesson which is you need to pick your battles very carefully.