Some of the murders in Dragon Ball are played for laughs or at the very least black comedy like how Frieza got Broly to go Super Saiyan.
And how is a behavior being played for laughs makes them worst? It would be something if the show was okay with his behavior, but Roshi being a perv is always presented as a bad thing and he regularly gets punished for it. In comparison, the nazi mass murderers are often made to be cool with Black specifically never being punished for his actions and Vegeta getting a hot rich wife despite his past that he didn't make up for until the Buu Saga.
Cause you please stop calling them nazi's to strengthen your point? It's inaccurate and frankly disrespectful.
I always liked Roshi as martial artist (he was a badass in the World's Strongest) but he was a bit much and I could see why others would have an issue with him. I mean, an under age Bulma flashed her privates at him for a dragonball. Yea played for laughs haha that's fucking disgusting