Extremely hard, because you do not fit in and feel alienated by some citizens of that country.<span />
You won't know what the outcome will be and you never will unless you try.
No. Science cannot go too far. Science is the method of pursuing knowledge, and the pursuit of knowledge. Knowledge in itself is not dangerous. It only becomes dangerous when people use it for immoral purposes, and THAT has nothing to do with the science that produced the knowledge.