This is classic character assassination. Create false stories, dehumanize the victim, strip them of their identity using racist stereotypes to enforce to the general public that they did in fact had it coming and deserved to be gunned down
"We must take sides. Neutrality helps the oppressor, never the victim. Silence encourages the tormentor, never the tormented. Sometimes we must interfere. When human lives are endangered, when human dignity is in jeopardy, national borders and sensitivities become irrelevant. Wherever men and women are persecuted because of their race, religion, or political views, that place must - at that moment - become the center of the universe."
Elie Wiesel (via missrosemaryclaire)