Elderly black man kills intruder who breaks into his home, relatives of criminal upset that criminal wasn't given sufficient warning before being shot

The relatives of the criminal are upset that he wasn't given sufficient warning.  Put aside that the relatives are speaking out before they even have a clue whether a warning was actually given, it is strange that they put the blame on the elderly black man who was defending himself.  Possibly a warning was given, though if a criminal is in your home at night, someone who might only be feet away, the warning is that the criminal should know that he should be in someone else’s house.

From Dallas News | myFOXdfw.com:

An elderly man shot and killed a would-be burglar inside his Oak Cliff home. 
Police say the homeowner saw Deyfon Pipkins, 33, trying to climb into the window and fired his weapon at least once at the intruder. . . . .
"It means they don't actually have to retreat once someone comes in their home," Sergeant Calvin Johnson, Dallas Police Department, said. "You have the option of using deadly force if you believe your life is in danger."
After police notified relatives of Pipkins' death, some showed up at the house. They were upset, and questioned the homeowner's actions.
"He could have used a warning," Lakesha Thompson, Pipkins' sister-in-law, said. "He could have let him know that he did have a gun on his property and he would use it in self-defense."
Pipkins had a lengthy criminal record. . . .