. >> other images show nikolay trying to defuse the situation. >> there are pictures of nikolay trying to stop. >> natalia also believes her son is innocent. she tells us she feels like she's back in the days of the show trials under stalin. once a week, she brings her son vegetables and medicines in jail. the prison has an ominous reputation. >> this is a nightmare that i never imagined in my wildest dreams. you keep hoping you'll wake up. nikolay now has gallbladder and liver problems. he got high blood pressure there. he has an allergy and suffers from headaches all the time. >> the charges against nikolay are also still baseless. the policeman here allegedly injured was never found. everywhere in moscow, parents are fighting for their sons. one of them is victor, his son was arrested in his apartment weeks after the demonstration had taken place. victor searched for him all over moscow for an entire day and eventually found him at police headquarters. with the help of footage from the internet the father has shown in exact detail where his son was on that day. he only watched the e