I'm not sure how plausible I find this. The (admittedly self-serving) perception within Delhi is that most of the bad stuff happening there is done by villagers from Bihar and UP, not by native Delhiites.
Most of the big city cases that I've read about (e.g., Uber rape case, 2012 gang rape) do fit that perception. So it would surprise me if things were somehow better in Bihar than in Delhi.
You're right. It seems that jsudhams is exhibiting a kind if ingroup bias. People of lower classes can believe that the upper classes use their wealth to strongarm people, and people of upper classes can believe that the lower class people have less to lose, and have easy links to gangs, so they can get away with criminal behaviour. Of course, it's all bull until it gets backed by data.
jsudhams wrote "Any of my know circles will surely slap the guy in the same place." But you know, this is true across all sectors of Indian society. Indians are generally rather prone to violence.
Most of the big city cases that I've read about (e.g., Uber rape case, 2012 gang rape) do fit that perception. So it would surprise me if things were somehow better in Bihar than in Delhi.