I get it. My comment might not apply to all audiences, granted, but my guess is it will have quite an impact on a few no-so-tiny niches.
Say you are a parent, in Europe, you love rugby, you bring your kid to the club week in week out and you were planning to take your u16 son/daughter to the world cup, their first. All excited about it, bells, whistles, the lot.
Well, I am pretty sure more than one of those will reconsider. Say you were planning on taking the misses with you. Same.
The images were appalling. I am not a stranger to getting mugged, robbed, beaten at a stadium. I understand the risks. But i saw something else here. Again, the videos were heartbreaking. This were not prima donna's complaining that the riesling served was not chilled properly and it didn't pair well with the beluga. No. These were people who go to the stadium every single week, not hooligans, but people who are used to crowds, know what the signs of danger are and how to avoid them. These same people are now crying on national tele because of what happened. Either all liverpool fans suddenly transformed into snowflakes or this was something else. I am inclined to believe it's the latter.
I know 5/10 people relatively close to me for which this alone made them change their decision to go to the WC.
Anecdotal evidence, i know. Stil..