"TEXAS TOWER SNIPER"

Today's news is often "stained" by reports of mass killings.  Some Nut-job goes on a rampage with, often a firearm, sometimes a knife or motor vehicle, but always with an evil heart.  It seems so common that the public accepts the talk and the attempt to "ban the gun, you know, the 'Ugly' one good only for killing people".  We never hear of banning knives, or motor vehicles, do we?
But this story is about Charlie Whitman.  The date is August 1st, 1966.  Charlie had viciously killed his mother and his wife with a hunting knife.  That was not enough for his "mindless act".  Whitman made his way the the University, climbed up into the Texas Tower, armed with a semi-automatic, .30 cal. M-1 Carbine and in the next 90 minutes, shot 47 people, killing 16.  His rampage may have been even worse except for a couple of Texas Gents who grabbed their hunting rifles out of their pickups and laid fire on Charlie, thereby forcing him to seek cover, while police made their way up the tower and shot Charlie Whitman to death.
The autopsy on Whitman showed a walnut sized tumor in his brain.  Did that cause him to do this terrible act????...Medicineman!