Ralph Nader is an American political activist, author, and attorney known for his work in consumer protection and environmental issues. He gained national attention in the 1960s with his book, Unsafe at Any Speed, which criticized the automobile industry for prioritizing profits over safety. Nader's advocacy led to significant reforms, including the establishment of the National Highway Traffic Safety Administration. Throughout his career, Nader has run for the presidency multiple times, notably as a candidate for the Green Party in 2000. He has been a prominent voice in promoting corporate accountability and social justice, influencing public policy and raising awareness about various issues affecting American society.