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The initial struggle against racial segregation focused on buses and other forms of public accommodation because these were places where blacks had the same obligations as whites, but did not have the same privileges publicly, where everyone could see and be a witness. Blacks, as well as whites, paid the same fare for a bus ticket, for example, but did not have the same privilege to sit in any chair and remain seated throughout the trip. The ticket price could be used as an element against bus companies, since blacks were exploited for that price.
Churches were central to the struggle for black freedom, because they were a very important and influential element within black communities and very influential across the country, since most of the American population was Christian.
The tensions that white people caused to boycotts, happened because the white population did not want to share the privileges they had because they thought they would be harmed if the segregation was ended. Segregation privileged the white population and they did not want to deprive them of privileges. Some whites, on the other hand, supported boycotts, as they believed that segregation was immoral, anti-democratic and limiting.