How does witnessing or hearing about hate crime change people's view on ethnic minorities?Researchers found, for example, that people reporting second-hand information about hate crimes - which are often exaggerated and unreliable - were more likely to think negatively about migrants, exclude them from their communities, and wouldn't be too keen moving into a neighbourhood where new migrants lived.

http://researchstoryteller.com/espressoknowledge/witnessing-hate-crimes