In many parts of the United States, the arrival of spring has been fleeting and fickle. But there’s no mistaking that college graduation season is here, with the strains of “Pomp and Circumstance,” turning of tassels, tossing of caps – and protests over choices of commencement speakers arising along lines that reflect the country’s political divides. Rutgers, South Carolina State, and Utah Valley are among the universities that recently disinvited speakers after objections by campus activists. Others have forged ahead – as New York University did on Thursday, with the choice of one of its own: professor, author, and free speech advocate Jonathan Haidt. Student government leaders had objected to hearing from Dr. Haidt, known for his critiques of social media and diversity initiatives, as well as what he views as the “coddling” of young people from having to deal with the friction of differing worldviews. Despite such protests and even walkouts, a countertrend is quietly taking hold.…