Even if you hear about something serious happening and feel that you should say something, posting in the heat of the moment isn't always the right thing to do. And making that judgment can be very difficult.
Once you've finished writing, step away from the screen, drink some water, and close your eyes. Take about five minutes to relax your whole body.
Then read what you've written aloud about three times. Even a quiet voice is fine.
If you feel, even slightly, that you can't take responsibility for your words, get some sleep and give it some more thought tomorrow 😌