CARTOON Network, the children's television giant, is under fire from the powerful Hispanic-American lobby after removing Speedy Gonzalez from its regular programming, amid fears that the cartoon mouse fostered negative images of Mexicans. Instead of approving its sensitivity to ethnic slurs, Hispanic American groups and media have accused the station of misunderstanding Speedy. They say the fastest mouse in Mexico is a positive role model, famed for outwitting his North American nemesis, "Gringo" cat. Laurie Goldberg, a Cartoon Network spokesman, denied yesterday that Speedy was banned, but said the station "thinks twice" before putting the cartoons on, partly because they...