See: Watching Them, Watching Us (link) and: Counter-terror police contact parents of Birmingham student protester over alleged ‘domestic extremism’ (link): "Counter-terrorism police have approached the parents of a student who was arrested during a protest
See: Watching Them, Watching Us (link) and: Counter-terror police contact parents of Birmingham student protester over alleged ‘domestic extremism’ (link): “Counter-terrorism police have approached the parents of a student who was arrested during a protest earlier this year at Birmingham University, asking to discuss ‘concerns’ about his behaviour.”