Complex sentence: Red is also a color widely used for getting attention, such as stop signs or royal dresses, and is associated with socialism and communism, like the flag of the Soviet Union Eva Heller, "Psychologie de la couleur-effets et symboliques".
Split into simpler sentences: Red is also a color widely used for getting attention, such as stop signs or royal dresses. In addition, red is widely associated with socialism and communism, some examples being the flags of the Soviet Union Eva Heller, "Psychologie de la couleur-effets et symboliques".