In 1961, an multiracial group of intrepid "Freedom Riders" attempted to desegregate bus stations in some of the most militantly segregationist parts of the Deep South. These courageous civil rights activists, including John Lewis, Diane Nash, Jim Zwerg, and James Peck, encountered shocking violence in the State of Alabama. A bus they were taking was burned down, and several Riders were bloodied & beaten by organized vigilantes who opposed racial integration. Once photographic images & film footage of this brutality received international media coverage, the Kennedy Administration finally intervened to force desegregation of interstate travel facilities. Southern politicians then attempted to get revenge by tricking busloads of impoverished African-American Southerners to head north in the so-called "Reverse Freedom Rides." Meanwhile, Cold War tensions continued to heat up, as the Vienna Summit between John F. Kennedy & Nikita Khrushchev failed to reach a solution to the Berlin crisis, leading the Communists to construct the Berlin Wall to keep East Germans from moving into the capitalist West. Decolonization continued to free global populations from European imperialism, including a violent struggle that gained Algerian independence from France. Some new nations sought neutral non-alignment, while others allied with the Communist bloc. JFK tried to keep these new Third World nations from siding with the Soviets via aid programs such as Food for Peace, the Peace Corps, and the Alliance for Progress in Latin America. However, there was a more coercive side to these US Cold War efforts, as the Kennedy Administration also funded CIA interference into foreign politics, anti-Communist military buildups in Latin nations, and an escalation of US military commitment in South Vietnam. The year closed on an ominous note as both the USA & the USSR began escalating defense spending and nuclear testing.