Millennials consider themselves more tolerant than their parent's generation, but in fact a new study shows that Generation Y is much less accepting of opinions that aren't similar to their own.

McLaughlin & Associates conducted a survey commissioned by The William F. Buckley Jr. Program at Yale about attitudes towards free speech on campus.

The report found that 51 percent of millennials on college campuses support their school having speech codes to regulate speech for students and faculty, and another 63 percent favor professors employing "trigger warnings" to alert students of material that could upset them.

A shockingly high 33 percent could not identify the First Amendment as part of the Constitution that supported free speech. Similarly, 35 percent said that the "hate speech" was not protected.

Nearly a third of self-identified liberal students said the First Amendment is outdated.

The Wall Street Journal reported that this correlates to why so many college campuses have disinvited conservative speakers including Ayaan Hirsi Ali, George Will, and Charles Murray.