Wikipedia
In criminology, a political crime or political offence is an offence involving overt acts or omissions (where there is a duty to act), which prejudice the interests of the state, its government, or the political system. It is to be distinguished from state crime, in which it is the states that break both their own criminal laws or public international law.
States will define as political crimes any behaviour perceived as a threat, real or imagined, to the state's survival, including both violent and non-violent oppositional crimes. A consequence of such criminalisation may be that a range of human rights, civil rights, and freedoms are curtailed, and conduct which would not normally be considered criminal per se (in other words, that is not antisocial according to those who engage in it) is criminalised at the convenience of the group holding power.
Thus, while the majority of those who support the current regime may consider criminalisation of politically motivated behaviour an acceptable response when the offender is driven by more extreme political, ideological, religious or other beliefs, there may be a question of the morality of a law which simply criminalises ordinary political dissent.