As a result of the Freedom Rides,

自由之行后
they had integrated interstate transportation,

他们整合联结了州际公路
at great cost to the volunteers who rode those buses.

驾驶汽车的志愿者则付出了巨大的代价
They were beaten. Some were killed.

他们当中有些人被殴打有些人被杀害
Civil Rights workers were murdered in various states.

很多州的民权工作者被谋杀
It had come to a kind of crescendo with voter registration drives and

随着1964年选民登记运动的开展以及
the Voting Rights Act of 1964.

选举权法的颁布谋害行动声势渐长
At the same time,

与此同时
Lyndon B. Johnson was ratcheting up the Vietnam War,

林顿·约翰逊将越南战争升级
so the Gulf of Tonkin Resolution was passed in 1964,

1964年通过了东京湾决议
which authorized bombing raids on Cambodia.

决议授权美军空袭柬埔寨
This was a new turn in the war, and it promised to escalate it,

成为战争的新转折点它有望升级战争