What is secondary boycott picketing? When is it legal, and when is it not?

Question

What will be an ideal response?

Answer 1

Unions sometimes try to bring pressure against an employer by picketing the employer's suppliers or customers. Such secondary boycott picketing is lawful only if it is product picketing (i.e., if the picketing is against the primary employer's product). For example, union members go on strike against their employer, an electronics manufacturer. The union members subsequently picket a big box electronics retail store that sells the manufacturer's products. They carry signs announcing their strike and request that customers of the big box electronics retail store not buy products manufactured by their employer. This is lawful secondary boycott picketing.
On the other hand, secondary boycott picketing is illegal if it is directed against the neutral employer instead of the struck employer's product. For example, if the union members in the example above carried signs requesting that customers of the big box electronics retail stores not shop at the big box electronics retail store at all, this would be unlawful secondary boycott picketing.