Hmmm... so Jesus is unethical? When he told his followers to make disciples, he prefaced his command by saying "All authority has been given me in heaven and on the earth." (Matthew 28:19,20) God gave this authority to Christ.(Psalms 2:8)
Therefore, the Sovereign of the Universe and his Son have given command to preach and teach the good news. Who should Christians disobey? God and his Son, or some man-made law constructed to prevent honest hearted people from hearing the truth?
The early disciples answered that question clearly at Acts 4:19,20;Acts 5:29).
Often these lands that forbid preaching are ruled by false religious leaders who want to keep the people they rule in darkness. Not unlike the inquisitions and evil deeds of the churches (that no more represent Christ than the non-christian religions do.)