Northwestern remained a staunchly conservative institution throughout its history and into the 1950s and 1960s; the University of Chicago often referred to its uptown rival as "Country Club U". A 1952 visit by Senator Joseph McCarthy was met by little protest and much acclaim from both the student body and faculty. However, Northwestern students became increasingly politically active and engaged in protests and strikes throughout the 1960s and 1970s. A chapter of Students for a Democratic Society (SDS) was founded in 1965. Demonstrations mainly stemmed from student opposition to the Vietnam War but also included protests against the draft, Navy ROTC, defense industry corporations, and the Nixon administration as well as supporting affirmative action, environmentalism, women's rights, and other instances of New Left social activism. Despite the size of the protests, the student body was split between professionally oriented and traditional student body and activists. Some fraternities were known to antagonize protesters by playing patriotic music and jeering them from their houses.