A prison strike is a strike

Strike action

Strike action, also called labour strike, on strike, greve , or simply strike, is a work stoppage caused by the mass refusal of employees to work. A strike usually takes place in response to employee grievances. Strikes became important during the industrial revolution, when mass labour became...

 taking place inside a prison

Prison

A prison is a place in which people are physically confined and, usually, deprived of a range of personal freedoms. Imprisonment or incarceration is a legal penalty that may be imposed by the state for the commission of a crime...

, involving either a hunger strike

Hunger strike

A hunger strike is a method of non-violent resistance or pressure in which participants fast as an act of political protest, or to provoke feelings of guilt in others, usually with the objective to achieve a specific goal, such as a policy change. Most hunger strikers will take liquids but not...

 or a prison work strike. The California Code of Regulations

California Code of Regulations

California Code of Regulations contains the text of the regulations that have been formally adopted by state agencies. They are reviewed, approved, and made available to the public by the California Office of Administrative Law , and are also filed with the Secretary of State.The CCR consists of...

 (CCR) states that "[p]articipation in a strike or work stoppage", "[r]efusal to perform work or participate in a program as ordered or assigned", and "[r]ecurring failure to meet work or program expectations within the inmate's abilities when lesser disciplinary methods failed to correct the misconduct" is "serious misconduct" under §3315(a)(3)(L), leading to gang

Gang

A gang is a group of people who, through the organization, formation, and establishment of an assemblage, share a common identity. In current usage it typically denotes a criminal organization or else a criminal affiliation. In early usage, the word gang referred to a group of workmen...

affiliation under CCR §3000.