Why does BC have police with guns on campus, when some other institutions have only security personnel who don’t carry weapon?

The short answer is that Massachusetts law allows the state police to appoint college & university employees as special state police officers. It’s not clear when this special status began. There is one mention of Newton Police being called to handle protesters in 1971, so it’s possible BC’s security at that time was less robust. I’ll have my assistants look further into why.