Eric Dier says he feels "too uncomfortable" for his family to attend away matches and believes fan behaviour in football is a "serious problem".
He also revealed abuse was aimed at his brother in Spurs' 2-2 draw with Chelsea at Stamford Bridge last month.
"[Fan behaviour] has definitely got worse," Dier said.
"For me it is a serious problem. I had some family and friends at the Chelsea away game with Tottenham and they had problems and stuff.
"I wanted to emphasise it was both sets of fans - I am not saying it is Chelsea fans or Tottenham fans, it is football fans in general.