During the Civil Rights Movement, various activists and organizations worked tirelessly to end racial discrimination and promote equal rights for African Americans. One significant event that occurred was the March on Washington for Jobs and Freedom, held on August 28, 1963. This event is remembered for Martin Luther King Jr.'s iconic 'I Have a Dream' speech. The movement used various strategies and tactics, including nonviolent protests, legal challenges, and grassroots organizing, to advance their goals. Which of the following pieces of legislation aimed to protect voting rights for African Americans following the unrest and challenges they faced in exercising their democratic rights?