Anyone issuing death threats is obviously an idiot and should be prosecuted to the full extent of the law.
Unfortunately, it sounds like both sides (not Cruz, I'm talking about the general environment in the US) make threats, news stories was on Dr. Ford receiving threat as well as of course, Brett and his family.
To make threats against a restaurant and their owners is truly a milestone in moronic behavior.
The net might make it easier to make death threats, a few years ago, there was even some to-do about fans of opposing ice hockey teams making threats against the stars of teams.