Professional political constantly try to think of ways to inspire people to sign a petition, write our congressional representatives, get out and vote, or otherwise engage politically.

mobilizers

Explanation:

The group of people being described are known as Professional political mobilizers. These are individuals whose professional job is to go and talk to as many people as possible in order to talk and persuade them to vote for the political party they work for or believe in. They do this by providing information on the political party and telling them about the promises that the party is making for the community.

answer; the government can clearly justify the restriction;