“goes postal” is another one of those social media constructs with little basis in truth. But if you hype it enough it becomes part of the vocabulary.
How old are you? Going postal predates the internet by more than a decade. It originated in 1986 with a string of postal workers well “going postal” that string of mass murder happens before most of the people who invented social media were even born and the term predates them as well. The conspiracy loons are out in force today. How sad it must be to live thinking the big bad govt is out to get tham. Government is corrupt for sure but the tinfoil hat crowd takes the cake.
Going postal pre-dates social media. First use was 1993 after several shootings by postal employees.