A STRIKER is a person who participates in a picket-line, which is a form of protest where people gather outside a workplace or other location to demonstrate their opposition to a particular cause. The strikers are usually workers or union members who are protesting against unfair labor practices, low wages, or other grievances. They may also be protesting against government policies or corporate decisions. The picket-line participants are typically peaceful and organized, and they often carry signs and chant slogans to make their message heard.