They already tried it before but they didn't succeed on killing it.
Some country even ban it but they couldn't totally stop the people from using crypto or earning from it.
They could only create FUD by banning it but it wouldn't kill it.
Attacks like this is something we are not new to, the chase of Bitcoin already started years back nothing different than what it has been only for the new deployment of country based digital currencies which many investors are scared, no potential advantage to pump or move the price like we do experience in Bitcoin investment.
The government can keep on trying, and their restriction can be enhanced under few countries but the best population will not compromise their policy, Bitcoin is here to stay even the government is not permitted to totally restrict Bitcoin, moreover we have a focused ATH to meet ahead.