In a year in which student activism and free speech issues have dominated conversations on many campuses, and beyond, a Williams College official takes on the concerns of those who argue that students today are too quick to take offense at others’ language and perceived biases. He writes at a time when two speakers who had been invited to Williams as part of a series meant to challenge students with unfamiliar or unpopular views were canceled recently — first by students, last spring, then by the president of the elite private college in Massachusetts last month.