You pick the people you want to influence, and you make yourself like them in all ways EXCEPT a carefully chosen few that are your most important targets of change. You might seriously consider publicly espousing a moderate version of Islam no matter what you believe if you are committed to the Islamic people of Morocco. You could even do it pretty honestly I think, isn't the essence of Islam submission to the will of Allah (as opposed to a believe in Allah)? If you made this choice couldn't you honestly say "I have deliberately and rationally chosen to submit myself to the will of Allah as do so many others in my country. And I will work tirelessly to advance science and freedom in Morocco as I am told by Allah to do so."

Whether it is admitted or not, This is what successful politicians must be doing. It is implausible that people so well informed as politicians, and some of them are incredibly intelligent, could truly back so many stupid policies as they do. They pick their battles and happily admit defeat on the battles they have not picked.

It could well be that given your values, this is the rational way for you to go.

They probably can't. Living in a seriously oppressive society is, well, seriously oppressive. Sometimes it really does get in your way.

They might be able to chip away a little at the edges here and there. That's probably about it, unless they want to change tack and start a revolution. In which case they'll probably need a cause with more popular appeal than rationalism.

Paul Graham discusses some ideas in this essay, granted he's mostly thinking about the western world, where the worst that's likely to happen to you is being shunned and possibly fired, but some of the advise still applies.