LONDON (Reuters) - Foreign ministers in the G7 group of nations including the United States have expressed grave concerns at what they said was China’s decision to fundamentally erode democratic elements of the electoral system in Hong Kong. The G7 released a statement that was tweeted by British Foreign Secretary Dominic Raab, saying the recent decision to change Hong Kong’s electoral system indicated that authorities in China were determined to eliminate dissenting voices and opinions in Hong Kong. “We also call on China and the Hong Kong authorities to restore confidence in Hong Kong’s political institutions and end the unwarranted oppression of those who promote democratic values and the defence of rights and freedoms,” it said.