Why are many white males scared to fight?

I am just curious why they heck do many white males get scared at the sight of any physically threat or fight even those that talk tough. So far virtually all the ones i have seen go red and **** them selfs at the sight of a fight. i am i missing something here? i am confused cant get that scared if i try...also is it cowardice that allows some of them to talk crap about other races over the internet?