Definitions of clamor:

• noun:   loud and persistent outcry from many people

  Example: "He ignored the clamor of the crowd"

• noun:   a loud harsh or strident noise
• verb:   compel someone to do something by insistent clamoring

  Example: "They clamored the mayor into building a new park"

• verb:   make loud demands

  Example: "He clamored for justice and tolerance"

• verb:   utter or proclaim insistently and noisily

  Example: "The delegates clamored their disappointment"