Systemic Racism (also called structural or institutional racism) - racism that exists across a society within, and between institutions/organizations across society
Business Insider: 26 simple charts to show friends and family who aren't convinced racism is still a problem in America
NPR: What Systemic Racism Means And The Way It Harms Communities
Rreuters: The Race Gap: How U.S. systemic racism plays out in Black lives
Interpersonal Racism (also called individual racism or personally mediated racism) - occurs between individuals, and is what most people think of when using the term racism.