Supporters launched verbal abuse at the coach and players after their 7-0 Copa del Rey defeat at the hands of Barcelona on Wednesday.
Two hundred supporters were involved in an angry demonstration against Gary Neville and his Valencia squad after their 7-0 defeat to Barcelona.
Four goals from Luis Suarez and a Lionel Messi hat-trick saw los Che thrashed in the first leg of their Copa del Rey semi-final on Wednesday.
The result continues Neville's disappointing start to life in charge of the club, which has included an eight-game run without a win in La Liga.