Just like Doctor study disease to cure it, similarly Villain in movies give us insights on criminal or dark mind and make us alert about possible bad people we could face in real life.
As long as the movie villains is nice person in real life, they need to be respected and acknowledged for their work and their is nothing to be ashamed off.
To make sure children and people with fragile mind, don’t accept movie villain as their role model in real life, movie Hero got to beat him and defeat him and give message to public that, bad behaviour like robbery, cheating, bullying, killing might give short term rewards but its not worth following, as there is lot of beating and punishment at the end.
Anyway it all happened in the movie, so children of people playing villain should not take it personally. In fact they should understand that many movie villains might be more self-controlled than average person in real life, as they can dare to face an insulting image of themselves with a smile, which get badly beaten on screen and loudly cursed by audience.
The impact of his acting is so powerfull that years later i was watching Rocket Singh i knew he was a good chap but still some how i felt a bit uneasy, later on i settled in the movie accepting that he is a good dad but i can understand what his daughters are talking. Great Actor !!