Fewer refugees from Donald Trump's travel ban countries have killed people in terrorism in the last 40 years, than White supremacists have in the last week

This week three men were stabbed, one fatally so, in Portland, Oregon, after intervening when a man shouted racial slurs at two young women wearing hijabs on a train.

At the University of Maryland, Richard Collins III, a newly-commissioned army lieutenant was stabbed to death at the University while visiting friends.

The FBI are investigating it as a hate crime, as the suspect was a member of various white supremacist groups.

That's at least three probable racially motivated murders from white Americans on U.S. soil in the last week.

Donald Trump's failed travel ban, which failed in January, proposed to suspend all visas for nationals from seven 'Muslim majority' countries.

Refugees from those countries, Iraq, Iran, Libya, Somalia, Sudan, Syria, and Yemen have killed zero Americans in terrorist attacks in the US since 1975.

Trump is currently making attempts to pass an amended version of the travel ban.

More: Show this to people who say Obama started the 'Muslim' travel ban