Denials, politico kind

It's become a fashion to deny a statement made by a politician saying they have been misquoted.
No doubt the 24/7 media picks n choose a part of a  speech for their convenience. This cannot give them a right to deny their own statements which are in general controversial.  The moment they face heat they are simply denying what they said on record.
Now the latest is denying the voice itself which is on record, are we not allowing things to go too far.
Is it not time for technology to be used to confirm the  voice so that we can nail the culprit politicians n others.
Police should be instructed by courts(politicians don't have guts to nail their own)  to book suo moto case against politicians n others who make divisive speeches be they religious or region. Thereafter the law should take it's own course.