Picketer (noun)

A person who participates in a picket line, usually as a form of protest.

Origin:

Derived from the verb 'to picket', which originated in the 17th century, meaning to post soldiers along a picket line as a guard.

Examples:

1. The striking workers were joined by picketers from other unions in the city.
2. The picketers held signs and marched in a circle in front of the factory.
3. The picketer's goal was to draw attention to the company's unfair labor practices.
4. The picketers made a human chain to block the entrance to the company's headquarters.
5. The picketer was determined to continue the protest until their demands were met.