How you can look at any majority islamic country?? it will be through media which will only make you see the bad side only.
what about this countries governments, are they applying islamic rules ??absolutely no , then how you judge islam by countries controlled by "none islamic" government that came by USA support!!?? so the judgement will be on this government which are anti-progress not islam.
for what you have seen i dont know what happened but even if this muslim was a bad guy you cant judge islam by one of 1500 000 000 000 muslims, you have to read about islam and listen to muslims and none muslims opinions so you can make a judgment.
for example why men and women are not competing against each other in sport(ex football) in the countries that calls equality? because its not fair for women they dont have men muscle combination.
because of this differentiation, women are better than men in some life parts, men are better than women in other life parts, and they are equals in others .
so we accept equality as a detail under justice.
no you are wrong, even those who you called "extremists" does not kill none muslims for nothing.
and your brother friend ,from what you have said,he is not "extremists" he has Obsessive-Compulsive Disorder.