Colin Kaepernick emerged as a prominent activist following his football career, particularly known for his protests against police brutality and racial injustice. His decision to kneel during the national anthem in 2016 sparked a significant movement within sports and beyond. Kaepernick's activism drew both support and controversy, raising awareness of systemic inequality in the U.S. After leaving the NFL, he continued to advocate for social justice through various initiatives, including the Know Your Rights Camp, emphasizing the importance of education, activism, and empowering marginalized communities.