A 400- pound asthmatic Eric Garner died while being arrested by police in Staten Island. (Photo By: /NY Daily News via Getty Images)

In the past eight days, two grand juries have opted to not press charges against white police officers involved in the deaths of unarmed black men. The decision to not indict a police officer in the death of Eric Garner, who was placed in an apparent chokehold by the police officer and almost immediately died, has startled even many conservative commenters who often defend police actions.

In the wake of these events, at least one law enforcement agency has respond with a tone of impunity. The St. Louis Police Officers expressed outrage after five players on the  St. Louis Rams walked onto the field with a "Hands Up" pose to protest the shooting of Michael Brown. Just this morning, the St. Louis County Police Department -- at the center of the Michael Brown controversy -- sent out the following tweet.

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This tweet, since deleted, linked to a Facebook post -- also deleted -- on one of their precinct pages, in response to yet another officer shooting -- that of Tamir Rice, a 12-year-old Cleveland boy with a pellet gun who was shot dead by a police officer two seconds after getting out of a car.

The Facebook post entitled "Kids Will Be Kids?" -- screenshot below -- warned parents that their children "need to comply with officer instructions," and that "clear communication between your child and police is essential." The post ignores any notion of police involvement in Rice's death.

At best, this is a tin-eared response to a spate of national incidents that threaten to undermine the public's confidence in the fairness and competence of their law enforcement officials.

At worst, it's a sign of law enforcement being emboldened by a series of grand jury decisions that have not found enough evidence to indict police officers in the deaths of unarmed men .