The violence associated with racism is usually directed at minorities, Jews, homosexuals, whites who are considered race traitors, and those who are believed to be working with or in the government, sometimes referred to as ZOG (Zionist Occupied Government). There is a distrust of the police because the police are an extended part of the government.
Any crime that is motivated by a racist philosophy or belief can be considered a bias crime, more commonly known as a hate crime. So a crime that is motivated by the victim's gender, sexual orientation, religious beliefs, race, or ethnicity may be a hate crime. Such crimes would include gay bashing, desecration of a Jewish synagogue, or attacks against minorities because of their ethnicity.
Tattoos
Although sporting any old tattoo doesn't mean someone is a racist or a member of a white supremacist group, there are specific types of tattoos that white racists tend to wear because of their particular significance to the movement. Adolf Hitler and the Nazi movement are often associated with racism. Some members of racist groups openly sport tattoos of Adolf Hilter, a swastika, a Celtic cross, lightning bolts, runic alphabet characters, or an eagle atop a swastika (the symbol of the Third Reich).
Just as in graffiti, numbers in a tattoo usually mean more than just the characters themselves. Examples of numbers used symbolically by white supremacists include the numbers 88 (eighth letter, HH, or Heil Hilter), 14 (the fourteen words, "We must secure the existence of our people and a future for white children."), 311 (the 11th letter is K and three times it equals KKK), 666 (said to be Satan's number), 777 (said to be God's number), 83 (the eighth letter is H and the third is C; Heil Christ), 100% or 100% wood (signifying purity of race), 4/19 (the date of the Waco, Texas, assault and the day of the Oklahoma City bombing), 4/20 (Adolf Hilter's birthday and also a time to smoke marijuana, in reference to proportions used to make the drug), and the number 5 (represents the expression, "I have nothing to say," a phrase used by San Diego-based white supremacist Alex Curtis to demonstrate the code of silence).