indignant, outraged
Si no estás indignado, no estás prestando atención.
If you're not outraged, you're not paying attention.
Estoy indignado con este sistema.
I’m outraged by this system.
Estuve indignado por su respuesta.
I was outraged by his response.
Tom está completamente indignado del comportamiento de Mary.
Tom is completely outraged by Mary's behavior.