Why is the designation of conspiracy as a crime sometimes criticized as a threat to first amendment freedom?

The designation of conspiracy as a crime is seen as a violation of the First Amendment guarantee of free speech.

The most common criticism is the lack of specificity in what constitutes an agreement and intent. The ambiguity in the definition raises concerns about the possibility of governments and states pursuing conspiracy-related charges against those speaking out against them.

answer; taking up arms to defend the nation;

the american colonists were happy with their vicorty, but the french were mad and the french and indians were not alies, and neither were the french and colonist. i think,