It's always going to be a no win situation for men in this argument. However, would you rather they'd sat back in peaceful protest and let Hitler occupy us?
When somebody like Putin suddenly decides to invade another country, other nations stand up in support and send their military assistance/financial aid to try and do what is 'ethical'. You have the vast majority of men in Ukraine taking up arms to fight. Not just military personnel like in most western wars but men that were accountants, IT managers, doctors, etc. One week sat in the office, next on the battlefield with a rifle in hand.
It must be terrifyingly for somebody that lived a fairly normal life up until that point - Ukraine wasn't exactly a third world country. The possibility of being captured by the Russians and Tortured to death so they can upload the video to the internet as a terror tactic. Maybe getting a bullet in the gut and dying an agonising death in the dirt with no ambulance anywhere to be seen.
This is the stuff of nightmares and whilst it's no doubt horrific for their wives and children too I feel the most for the men out there on the frontline. But feminists will always be able to say "oh, but it's all male violence. Nothing to do with us". They're right that it's caused by men but it's not these men.
This is where this gender stuff falls down for me by lumping all men together. A gay or black man somehow assumes a perverse manner of group culpability for the male violence enacted on him by the homophobic/racist thug stamping on his head in an unprovoked attack. Same with somebody paralysed in a wheelchair. They're still male and part of the demographic perpetrating male violence.
But as somebody said “People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf.”
The people these rough men fight are always other men, but let's not pretend that we wouldn't be screwed if they didn't fight. If a group like the Nazis or Islamic extremists got into power how do you think it would pan out for women?
There are other distinctions aside from male/female. I'd imagine Nazi women like Irma Grese felt a lot more kinship with the male SS officers she knew than she did with the female resistance fighters working for the allies. The 'us' and 'them' isn't always male vs female and many feminists seem to deride the very men that fight to maintain their freedom of speech.