Uno 's main action as prime minister was to institute the country 's first consumption tax , which immediately caused an uproar among many voters and led to the Japan Socialist Party 's victory in the Tokyo metropolitan legislative election of 1989 .
Uno 's main action as prime minister was to increase consumption tax , which caused an uproar among many voters and led to the Japan Socialist Party 's victory in the Tokyo metropolitan legislative election of 1989 .