no its a form of free speech in America other country's rules might differ
the 1st admendment
On public property, yes.
Picketing is generally allowed in the United States when employees wish to educate the public and other employees about circumstances within a business that employs more than one person. This is legal as long as the demonstration is peaceful.
Picketing for Love - 1938 was released on: USA: 28 May 1938
picketing
verb
The civil servants in Wisconsin are picketing the state house, with signs and chanting, to demonstrate their passion for their pension payments.
Picketing/boycotting.
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Picketing outside government buildings.
picketing