Which of the following trends tend to characterize the American left?

The trend that characterizes the American left is labor activism, which has historically been a cornerstone of leftist ideology in the United States. Labor activism involves advocating for workers' rights, fair wages, and improved working conditions, and it seeks to empower the working class to have a voice in their workplace and broader economic policies. This activism has been central to left-leaning movements, such as unions and social justice initiatives, aiming to address economic inequality and promote social welfare.

The emphasis on labor activism highlights the left's focus on collective bargaining, social equity, and protections for marginalized workers, which aligns with broader goals of social progressivism. In contrast, trends associated with racial exclusion and religious intolerance are more often linked to right-wing ideologies, which tend to emphasize nationalism and traditional values, thereby distinguishing the core values of the American left.