No state can kill or stop Bitcoin and Blockchain, and development will continue. governments and states or any organization can not control the crypto money market. In addition, the world is now adapting to the block chain, and even giant corporations are developing their own block chain networks to offer better access and marketing improvements to customers.
Nothing is impossible, but you have to know the government must cooperate to kill Bitcoin if they want.
Shutdown all mining farms of Bitcoin is the key to kill Bitcoin.
Because no transaction of Bitcoin will get confirm if the mining farm can not run to work and confirm those transaction hash on the network.
I do not say use this method can kill cryptocurrency, because some cryptocurrency use PoS to run instead of PoW as Bitcoin now.