What does "When a democracy is destroyed, it will not be from enemies from without, but rather because of enemies from within" mean? Why might Senator McCarthy have chosen to use this quote to support his claims?

The qoute by Senator McCarthy is all about the gains of democracy being eroded by party members of the same party as a result of the individual ambitions of the party members rather than the common goal of the party.

He might have chosen to use this quote to support his claims as a result of the fact that he suspected that the then president (President Truman) harbours communists that are well known in the government circles. This qoute is part of the speech he delivered as a result of him being suspected and accussed of being disloyal to the country.

During the speech, he presented the copy he has as the list of people he accused of being communist even though he never made their names public.

Explanation:

the intolerable acts were punitive laws passed by the british parliament in 1774 after the boston tea party. in great britain, these laws were referred to as the coercive acts.