They assert that one who opposes a measure supported by a majority must be antidemocratic and therefore an enemy of freedom. But freedom and democracy are not the same thing. Democracy is a form of government wherein the governed, through voting in which the minority is forced to submit to the will of the majority, have some influence over the government. Freedom is a state of affairs in which individuals are able to pursue their own interests, so long as they don't trespass against the fundamental rights of others, without interference from others, including government. For people to be free, government, even democratic government, must be limited.
Majorities can be just as tyrannical as dictators.
In an unlimited democracy, anything and everything is subject to a vote. In a limited democracy, the private sphere of human action is not subject to a vote. There, individual choice, not majority voting, is the proper decision rule. It is easy to show that there are some things that should not be subject to a vote. For example, suppose a majority of citizens in a country vote to confiscate the wealth of all black citizens and transfer it to all white citizens.