While people here process their anger and hone it into action, today is a good day to remind folks of the tools at their disposal.
If you are already stressed to the gills, it is perfectly fine to mute and block users as you see fit. You can always unmute/unblock later. Filtering hashtags and sticking to the My Friends column can also help slow the emotional tide. Pin #CatsOfCoSo and/or #DogsOfCoSo and feel your blood pressure lower.
The tools help.