Getty Images The NFL has banned a celebration popularized by Dallas Cowboys receiver CeeDee Lamb. Dallas Cowboys receiver CeeDee Lamb voiced his frustration with the NFL’s decision to ban his signature “nose-wipe” celebration, a move that targets the wideout’s go-to gesture from recent seasons. The league said the celebration popularized by Lamb carries “gang connotations.” Because of those associations, the NFL determined the gesture could be seen as promoting violence or gang culture, which