Not by a long shot. There was one lynching in Texas during the Civil War where 41 Unionists were strung up. There were others as well.
Were any of them Lynched because they were Italian?
Wondering why the headline even says, "Largest Mass Lynching in U.S. History," when the article then goes on to say that it wasn't?
Still, the fact that many different kinds of people were lynched is important for people to know because it gives more perspective to history.