Nueva Chicago's Arnaldo Gonzalez cast a shadow over his side's Primera Nacional clash against Atlanta by making anti-semitic gestures to the home crowd.
Atlanta, from the Buenos Aires neighbourhood of Villa Crespo, went back to the top of Argentina's second tier with a 2-0 win over their city rivals on Sunday.
No less than three players were sent off in a fractious clash, with Nicolas Previtali seeing red for the hosts and Gonzalez and Facundo Mater both walking for Chicago.