For example, if they accuse you of cheating in an election, it's to conceal their own cheating or to at least make it harder for you to accuse them of cheating. It's kind of a wet blanket used to help prevent your argument from catching fire.
And if they then accuse you of deflecting, it's just to muddle their own deflecting.
If they accuse you of collusion, it's to complicate the issue of their own collusion.
If they accuse you of rigging an election, it's to obfuscate their own election rigging activities.
Hillary has been known to lament “the politics of personal destruction” when she and Obama, as disciples of Saul Alinsky, have been the greatest practitioners of the art.
Projection...it’s what they do best. They accuse everyone of being and doing the very things that they are guilty of - it’s the primary component of their mental problems.