It probably is wildly inflated, I find most history written by any side of the issue prone to exaggeration. I got it from some black holocaust web sites but then I got the number of lynchings there also. Here is one of these sites: http://www.blackwallstreet.freeservers.com/
Race riots (which occurred mostly in the north) unlike lynchings, usually required the cooperation of state and local law enforcement. They were typically not simple mob actions but a form of organized and tacitly sanctioned actions designed specifically to intimidate a class of citizens. Local state and even federal law enforcement usually protected instead of prosecuting the offenders, even the US congress has sealed documents to prevent the knowledge of these atrocities from reaching the public (ie the East Saint Louis Riots). That makes them a much more serious violation of rights than drunken lynch mobs accosting the occasional black man.
I also see that you immediately reverted to the poor picked on south defense by saying that the north is just as bad.
No, I did not mean to insinuate that the the north was just as bad as the south. In the south all the sins are laid open to see in the history books, yet in the north everything is a secret, so the north is much worse in that they are so hypocritical.