Certainly if you look at any one type of crime, only a minority of men commit it. But not necessarily a small minority.
See the post upthread about men who admit they have or would abuse a child - 1 in 3 admit they would if they could definitely get away with it.
Similar surveys on rape give similar results - if you avoid using the word 'rape' and express it as something like 'make woman have sex with you when she doesn't want to' you get similar figures. Would if they knew they'd get away with it, 1 in 3; admit to having done it, 1 in 6. (That particular one was US college students, so not old enough to have had much opportunity yet; a recent meta-analysis covering more countries and age groups gave very slightly lower numbers, but only marginally.)
So a minority, yes. And we can probably guess there's a near 1-1 overlap between those 2 groups. But that's still one-third of men who admit they would commit the most serious sex crimes. There are bound to be more who don't admit it, or who would happily carry out more minor versions. That's a pretty big minority.
And there won't be a complete overlap between those who do/would commit sex crimes and those who would commit murder, robbery, violent assault ...
Are we still confident the total is under half?
I'd like to be. I really would. I'm not.
As for the warning from @MrFlintstone that someone might be riled up by this thread and 'do something stupid'. We know what - and who - that means, don't we?
Not a woman going on a rampage against men. Not a man going on a rampage against men. If it happens, it will be men who do it, and women will be targets. (In a response specifically to the anti-immigration posts there's a possibility that men would also be targeted, as the recent Belfast riots showed, but not only men.)