Noe Garza in a photo taken more than 15 years ago. Social media rumors say he is making white supremacist hand signals. But Garza told The Dallas Morning News he is making a &quot;L&quot; and a &quot;W&quot; -- the initials of one of his favorite bands. Garza is the brother-in-law of Amber Guyger, the Dallas police officer charged in the shooting death of Bosham Jean.(Facebook)