Tim Vickery for the BBC:
High farce and low morals sullied one of the showpiece occasions of South American football on Thursday night, when, with a place in the quarter finals of the Copa Libertadores at stake, the Buenos Aires super-classic between Boca Juniors and River Plate was abandoned at half time.
As they made their way onto the field for the second half, the visiting River players were attacked with a home made concoction of pepper and acid thrown by a group of Boca fans. The incident cast a global spotlight on some of the problems faced by Argentine football and society; the atmosphere of general disorder in which organised groups of fans, with strong links to the formal political process, promote violence and profiteering.
What a bunch of idiots.