"People need to vent the frustrations of the day"
When I'm pissed off and fed up, I go home at the end of the day, stroke the cat, and enjoy an extra large tea with a chocolate bar (or two, or three, depending on my anger level).
The best way to manage anger and frustration it to understand the difference between what you fuck up and what other people fuck up. If it was you, try to fix it, do better, etc. If it was other people, then let it go. As long as the paper trial misses you (else you've fucked up too), it's their shitshow, let them own it. Cat, tea, chocolate. Works every time.