If you have lived in Dallas any time and if you watch the news, you have seen John Fullinwider, though you may not be fully aware of it. In the ongoing protests over police shootings, he is often the old white guy with the bird's nest beard, sometimes with a megaphone in his hand but more often in the background and off to one side a bit, as if he got swept up in it by accident stepping out of a Starbucks. Take a look at his resume, however, and you will see that nothing about Fullinwider is an accident. At age 64, he has been hunting down the same villains and pursuing the same social goals his entire life. A founder in 1978 of Lumin Education, one of the city's most successful operators of private and charter schools for inner city kids, he has been on the board of 13 important social agencies and commissions in Dallas and has a fine-print list of civic awards and honors longer than his beard, which is very long. He's a Phi Beta Kappa graduate of the University of Texas in Austin with a master's in library science from TWU who earns his living as a medical researcher. In his work these days with Mothers Against Police Brutality, Fullinwider is the same smart, tough, trouble-making hippie he was on the day he got out of college. Even his foes tend to admit that Fullinwider brings integrity, intelligence and basic fairness to the fight, and Dallas is a better city for that.