Justified means if something is right or that it's good or the right thing to do. The quote sounds like it's too much. So I would say no, it's not justified.
Yes, it is true that civilians are only tried within the civilian tribunal, not military court, since there are major differences in terms of the ways in which these two courts are operated.
Answer: Because Hitler wanted just a race of Arians, but Jesse Owens comes along and destroys that by winning 4 gold medals but the Germans still got the most medals and also one of Hitlers' friends betrayed him but becoming friends with Jesse.
Hope this helps!!! Good luck!!! :)