"In fighting for liberation theres always retaliation," he wrote on Twitter. "We must protect our Freedom Fighters." The Know Your Rights Legal Initiative , a new arm of Kaepernick's nonprofit Know Your Rights Camp, is working with attorneys in Minneapolis to provide assistance and resources to anybody who needs it.

Kaepernick famously protested police brutality himself in his 2016 season playing as a quarterback for the San Francisco 49ers, by kneeling during the national anthem at football games. He has since described this peaceful protest, which drew criticism from some corners, as "a culmination of years of thought and experiences, of learning and unlearning." This ultimately brought his professional football career to a premature end, with no NFL teams willing to offer him a contract following the controversy sparked by his protests.

In fighting for liberation theres always retaliation. We must protect our Freedom Fighters. We started a legal defense initiative to give legal representation to Freedom Fighters in Minneapolis paid for by @yourrightscamp For representation or to donate https://t.co/q0pzAObCiG Colin Kaepernick (@Kaepernick7)

Protestors in Minneapolis as well as New York City, Los Angeles and other cities were galvanized after footage leaked online of a police officer pressing on George Floyd's neck, despite Floyd's repeated assertions that he couldn't breathe. The incident was the latest in a longstanding historical pattern of so-called "officer-involved deaths" of black men in the United States.

Whether it's calling your city officials or donating to legal defense funds, here is a list of the ways that you can help demand justice for George Floyd and help protestors.