Why did some civil rights workers begin to question the effectiveness of nonviolent protest in the mid-1960s? *?

four sitting presidents have been assassinated while in office but the first was abraham lincoln,

interest groups send representatives to state capitals and to washington, d.c. to put pressure on members of congress and other policymakers. they engage in lobbying, or the organized process of influencing legislation or policy. lobbying can take many forms. interest groups can testify in congressional hearings.