Absolutely true. Sexual frustration fuels suicidal/homicidal mass murderers. Look at the IslamoFascists.
A good friend of mine insists this is THE issue of the next decade.
The other thing that is never mentioned, in spite of al the information we get on Islamic countries these days, is that there is a 15% disparity between men and women in their populations according to UN statistics. We are so busy making nice that we don't note that they must be killing female babies.