A more thorough explanation:

Concerted action is when a group of people plan and agree to work together towards a common goal or cause. This means that everyone involved is responsible for the actions of the group as a whole.

For example, if a group of employees at a company decide to go on strike to demand better working conditions, this would be considered concerted action. Each employee is responsible for participating in the strike and supporting their fellow workers, and the company is responsible for responding to the demands of the group as a whole.

Another example of concerted action could be a group of activists working together to advocate for a particular social or political issue. By coordinating their efforts and working together, they can have a greater impact and achieve their goals more effectively.

Overall, concerted action is about collaboration and collective responsibility. It allows groups of people to work together towards a common goal, and ensures that everyone involved is accountable for their actions and the actions of the group as a whole.