“One thing leads to another at MiraCosta College [CA]. ... Last year, the college staged a public-issues symposium on the subject of ‘Civility in Our Civic Discourse.’ ... Among those in attendance were members of the League of Women Voters North County San Diego, and the program sparked a year-long study by the league on incivility in public discourse. It also prompted a desire to follow through with another program ... with the college.”