Solidarity is a concept in sociology and political theory that refers to the unity or mutual support within a group or community, particularly in times of adversity. It involves a sense of shared values, goals, and interests that bind individuals together and encourage cooperation and collaboration. Solidarity can be expressed through various forms of collective action, such as social movements, protests, and activism. Research in this area explores the dynamics of solidarity, its impact on social cohesion and resilience, and the factors that promote or inhibit solidarity within communities. The goal of such research is to better understand how solidarity can strengthen social bonds and promote positive social change.