Gherao, meaning "encirclement", is a word which denotes a tactic used by labour activists and union leaders in India; it is similar to picketing.
Usually, a group of people would surround a politician or a government building until their demands are met, or answers given.
[1] This principle was introduced as a formal means of protest in the labour sector by Subodh Banerjee, the PWD and Labor Minister in the 1967 and 1969 United Front Governments of West Bengal, respectively.
[2][3] Owing to its popularity, the word “gherao” was added to the Concise Oxford English Dictionary in 2004.
Indian; a protest in which workers prevent employers leaving a place of work until demands are met; Origin: From Hindi” and Subodh Banerjee was referred to as the Gherao minister.