<P> That experience destroyed what little faith SNCC activists had in the federal government, even though Johnson had obtained a broad Civil Rights Act barring discrimination in public accommodations, employment and private education in 1964 and would go on to obtain an equally broad Voting Rights Act in 1965 . It also estranged SNCC leaders from many of the mainstream leaders of the civil rights movement . </P> <P> Those differences carried over into the voting rights struggle that centered on Selma, Alabama in 1965 . SNCC had begun organizing black citizens to register to vote in Selma in 1963, but made little headway against the adamant resistance of Sheriff Jim Clark and the White Citizens' Council . In early 1965, local Selma activists asked the Southern Christian Leadership Conference for help, and the two organizations formed an uneasy alliance . They disagreed over tactical and strategic issues, including the SCLC's decision not to attempt to cross the Edmund Pettus Bridge a second time after county sheriffs and state troopers attacked them on "Bloody Sunday" on March 7, 1965 . </P> <P> The civil rights activists crossed the bridge on the third attempt, with the aid of a federal court order barring authorities from interfering with the march . It was part of a five - day march to Montgomery, Alabama, that helped dramatize the need for a Voting Rights Act . During this period, SNCC activists became more and more disenchanted with nonviolence, integration as a strategic goal, and cooperation with white liberals or the Federal government . </P> <P> SNCC's experience with the COFO and Mississippi Freedom Summer solidified their estrangement from white liberals . During several points in the Mississippi project, a team of Democratic Party operatives led by Allard Lowenstein and Barney Frank tried to take over its management . They sought to move decision - making power away from grassroots activists in the South, and purge Communist - linked organizations (such as the National Lawyers Guild) from SNCC's network, in spite of those organizations having made crucial contributions to the movement . Dorothy Zellner (a white radical SNCC staffer) remarked that, "What they (Lowenstein and Frank) want is to let the Negro into the existing society, not to change it ." </P>

What did sncc and core have in common