Ключевые слова: advertise, aggression, anger, assassin, attack, black, blackboard, blood, board, border, cancel, chalk, chalkboard, classroom, communication, crime, crossing, destruction, drawing, education, fear, forbidden, freehand, global, hand, hand drawn, information, killing, learn, message, poster, presentation, red, retro, school, script, sketch, social issue, teacher, terror, terrorism, threat, violence, white, word, world, worn, write,