Which form of protest involves union members standing near a business entrance during a strike?

Picketing is a form of protest where union members gather at or near a business entrance to express their grievances, often during a strike. This tactic is used to inform the public about the reasons for the strike, garner support for the union's cause, and discourage customers from entering the business. Picketing serves both as a visible display of solidarity among union members and as a means to apply economic pressure on the employer.

In this context, picketing is a targeted action aimed specifically at raising awareness and influencing the employer's decision-making, which distinguishes it from other forms of protest. Lockouts are typically initiated by employers to prevent employees from working, boycotting involves refusing to use or buy a company's products to push for change, and unrest is a general term that refers to societal turmoil or dissatisfaction but does not indicate a specific organized action.