Why did that woman ask a passer-by if he supports her cause? I mean, he was just walking past a demonstration, minding his own business, and suddenly such an intrusion. How is it better than when Jehovah's witnesses knock on my door or Greenpeace tries to block me from crossing a busy street and then they give me that broad fake smile and ask to sign a petition? Granted, I have never walked immediately by a demonstration and maybe that woman's behavior is normalized with that particular context, but just off the cuff to me it seems like interfering with the privacy of another.

Substantively, I agree with all the above posters and most emphatically with Rose in that your brother, given his physique, should not wrestle with girls.

When you start your story, you did not want your brother to read certain books. That alone was a red flag to me, especially given that it is not the case that the books call for flat out terrorism.

Better focus on your own life and leave the younger brother alone. You did not present any valid concern, any objectionable behavior that your brother engaged in vis-a-vis you, your mother or sisters.