Yeah, it was even in the news.
Change of plans, though. The KNVB made a big decision to play the final over two legs because of fear of riots and clashes between the two firms. One leg in Rotterdam without Ajax fans and vice versa.
New dates are 25th of april in the ArenA and may 6th in de Kuip.
btw the poster says:
Bloody Sunday
*date*
"the whole cancertown (yeah we like insulting with diseases) flat again"
"bombs on Rotterdam"
Referring to the 1940 bombardments of the Luftwaffe.
Pretty over the top if you ask me.