Can white people fight?

I've experienced seeing many white people fighting. I've witnessed some white guy fighting a black guy and the white guy straight got his *** knocked out by one-two punches. I've witnessed another white guy fighting a black guy (he might've been mexican, I couldn't tell) and one punch ... BOOM. he got knocked out. he couldn't counter any of that guy's moves. I've also experienced a white guy fighting some asian guy and the asian guy went Bruce Lee on his *** (like no joke) and he couldn't get up. Can white people fight?