Malcolm X, who in turn spoke at the SWP's public forums and gave an interview to the Young Socialist. Like all left wing groups, the SWP grew during the 1960s and experienced a particularly brisk growth in the first years of the 1970s. Much of this was due to its involvement in many of the campaigns and demonstrations against the war in Vietnam. Kahn and Horowitz, along with Norman Hill, helped Bayard Rustin with the civil rights movement. Rustin had helped to spread pacificism and non-violence to leaders of the civil rights movement, like Martin Luther King Jr. Rustin's circle and A. Philip Randolph organized the 1963 March on Washington, where King delivered his "I Have a Dream" speech. King began to speak of the need for fundamental changes in the political and economic life of the nation and more frequently expressed his opposition to the war and his desire to see a redistribution of resources to correct racial and economic injustice. As such, he started his Poor People's Campaign in 1968 as an effort to gain economic justice for poor people in the United States. He guarded his language in public to avoid being linked to communism by his enemies, but in private he sometimes spoke of his support for democratic socialism. In a 1952 letter to Coretta Scott, he said: "I imagine you already know that I am much more socialistic in my economic theory than capitalistic." In one speech, he stated that "something is wrong with capitalism" and claimed that "[t]here must be a better distribution of wealth, and maybe America must move toward a democratic socialism." Dr. Martin Luther King was the leader of the Civil Rights Movement, which emphasized nonviolence in the struggle for social justice and to give Black Americans equal rights under the law. According to David J. Garrow, King in private conversation "made it clear to close friends that economically speaking he considered himself what he termed a Marxist, largely because he believed with increasing strength that American society needed a radical redistribution of wealth and economic power to achieve even a rough form of social justice." King, in 1966, "rejected the idea of piecemeal reform within the existing socio-economic structure. Only at that time did he become persuaded that capitalism is the common determinant linking together racism, economic oppression, and militarism." There is conflicting interpretation by scholars who view King's radicalization