When governments subsidize projects, citizens pay twice—once as taxpayers who indirectly pay the subsidy, and then again as consumers in higher prices for the goods they buy and in reduced consumption.
Socialist regimes under the Soviets and the National Socialists silenced scientific theories that appeared to contradict the regime's ideological dogmas. The modern politicization of science is going down that road.
Private firearms ownership decentralizes coercive power, transferring some of it from the state to the private individual. Naturally, political regimes oppose this. But even many non-Americans embrace private arms.