I think what bothers me most is that the person he made fun of is a pro-athlete, part of the job is to take abuse from haters and rival fans. European soccer is notoriously rowdy, fans shout any and everything they can from the stands. It's part of the game.I don't know if you're aware, but the user posted the comments shortly after Muamba suffered a cardiac arrest on the pitch during a game. He was in critical condition in hospital for days, and remains in serious condition now.
The scenes were broadcast live on television, and the incident has received extensive media coverage, leading to an outpouring of support from all members of society, including players and supporters of rival teams.
Personally, I don't think these facts should have any bearing on the legality of making such statements. As far as I'm concerned the relevant legislation is absurd — I don't believe offensive speech should be prohibited — and this was a knee-jerk sentencing, the severity of which seems almost entirely divorced from that of the crime, but you have to admit the comments were in pretty bad taste...