As far as racial barriers go, the Hitler Youth and Charles Manson are very similar. They both had psychological disorders that may have led to their paranoia and anxiety and overall ludicrous thoughts and behavior and their successful manipulation of others, shared the swastika symbol, and were going to commit heinous acts that they tried to blame on other racial groups/people different than them.
To begin with, the Hitler Youth and Charles Manson and the Manson Family both had psychological disorders. “Serial killer Charles Manson had a severe case of anti-social personality disorder. Manson was diagnosed as having moderate to severe psychosis subject to psychotic breaks” (Manson 1). “Many of Hitler's behaviors are potentially symptomatic of an array of psychological disorders, including certain anxiety, mood, personality, psychotic, and developmental disorders” (Gehlem and Gregory 48-53). These examples prove that Charles Manson and Hitler both had mental disorders. It is most evident that both had psychological disorders that could have caused their irregular thoughts and behavior, especially the manipulation and persuasion of others.
In addition, Charles Manson and the Manson Family and the Hitler Youth, both shared a relationship to the swastika symbol. "Outside the courthouse, there was a group of Manson family members conducting a 24-hour-a-day vigil for him... Manson came into court one day with an "X" (swastika symbol) carved into his forehead, and the next day they all had X's on their foreheads" (Watson 38). This quote shows that Charles Manson and the Manson Family had took an "interest" in the swastika symbol. Likewise when the Hitler Youth members had to take their oaths, a blood banner (flag) was present which was a Nazi Swastika flag. In other words, both of the cults shared a connection to the swastika symbol.
Lastly in similar terms, the Hitler Youth and Charles Manson and the Manson Family were both prejudice against other racial groups/people. "During the trial period, each boy and girl had to pass a written examination to make sure they had mastered Nazi ideas about race and politics. They also had to prove their racial background... Only healthy boys and girls of proven "Aryan" descent were permitted to join" (Bartoletti 25). For instance, this quote proves the Hitler Youth had its members be prejudice against other racial groups/people different from them.
In other words, Charles Manson and the Manson Family and the Hitler Youth are similar because they each had psychological disorders, had a connection to the swastika symbol, and they both were prejudice against other racial people/groups.
As far as control and membership...