Moderator hat on.
Tone it down!
Temporary thread bans have been applied to a couple of the members.
Future repeats of the back and forth accusations and bickering will result in further warnings.
One of the offenders Reported some of the unacceptable language - which is good - but then responded to it in a similar tone - which resulted in our actions.
If you see something unacceptable respond calmly and civilly if you must, but Report it rather than fanning the flames.