Luis Oscar Chocobar[1] (born 26 May 1987)[2] is an Argentine former police officer convicted for the killing of a teenage boy during a chase after the latter stabbed a US tourist in La Boca neighborhood of Buenos Aires on 8 December 2017.

His case inspired the Chocobar doctrine, approved by Bullrich, which expanded the rights of police officers to exercise lethal force.

[1] On 8 December 2017, 57-year-old American tourist Frank Joe Wolek was stabbed seven times during a robbery in the neighborhood of La Boca, Buenos Aires city.

Chocobar, who had just left home to take service, immediately responded to the incident; identified himself as a policeman, gave the order of surrender to the delinquents, called for back-up and informed 9-1-1.

After a short chase, Chocobar reiterated his order to stop to the 18-year-old robber, who dropped his coat, and continued with his escape holding his knife.

[4][5] This was highly criticized by several national and international left-wing organizations and a part of the public, who claimed that Chocobar acted with intent to kill.

Chocobar did not serve time in prison due to the lightness of the sentence and announced that he will appeal to a higher court for acquittal.

[13] On 4 July 2023, the Supreme Court rejected an appeal by Chocobar's lawyers which demanded a retrial by jury and ratified the sentence in the first instance.