Let me give you a specific example. Well intentioned Christian missionaries give money to a new believer to help him cover living expenses while he attends Bible classes to learn more about Christianity. To the outside secular Hindu observer, this appears to be bribery, converting a Hindu to Christianity by using money as a motive. Because of the wide disparity between economies in the west and India, this accusation is exacerbated. I hope this helps sheds some light for you on why Graham Staines attackers might have been so angry and violent that night.
Perception is reality as they say.
However this in no way excuses such an evil and wicked act of violence. Nine months after the Staines episode, the worst cyclone in modern history struck the coast of Orissa, India totally devastating a 250 mile stretch of coastline as far as 100 miles inland. Over 60,000 people lost their lives in this huge storm. If you ask most Hindus in Orissa, they will say YES, God has judged us for killing His servant. Whenever God pours out His wrath He remembers mercy.