Thousands of people have staged protest rallies across the world to express their deep displeasure at Donald Trump, who was sworn into office at an inauguration ceremony in Washington, DC, and officially became America's 45th president on Friday. Similar protest rallies turned violent in the US as police clashed with anti-Trump demonstrators in the capital.

Demonstrators hold placards as they protest outside the US Embassy in London, Britain, on January 20, 2017, to coincide with the inauguration of Donald Trump as the 45th president of the United States. (Photo by AFP) People rally during an anti-Trump protest on the day of his inauguration as US president in front of the US Embassy building in Budapest, Hungary, on January 20, 2017. (Photo by AFP)Demonstrators hold placards in Madrid, Spain, on January 20, 2017 during a protest against Trump as his presidential inauguration kicks off in Washington, DC. (Photo by AFP)Demonstrators hold placards in Madrid, Spain, on January 20, 2017 during a protest against Trump as his presidential inauguration kicks off in Washington, DC. (Photo by AFP)Panamanians protest Trump's inauguration, burning an effigy of him, in Panama City on January 20, 2017. (Photo by AFP)A German protester shows a banner during an anti-Trump rally on the day of his inauguration as US president, in front of Brandenburg Gate in Berlin, Germany, on January 20, 2016. (Photo by AFP)Anti-riot policemen block activists as they arrive for a rally in front of the US Embassy in Manila, the Philippines, on January 20, 2017, ahead of Trump's presidential inauguration. (Photo by AFP)People stage a demonstration in protest at Trump's inauguration, in Tokyo, Japan, January 20, 2017. (Photo by AFP)People stage a demonstration in protest at Trump's inauguration Trump in Tokyo, Japan, on January 20, 2017. (Photo by AFP)Demonstrators hold up banners during a protest against the inauguration of Trump as US president in Edinburgh, Scotland, on January 20, 2017. (Photo by Reuters)Demonstrators hold up banners during a protest against the inauguration of Trump as US president in Edinburgh, Scotland, on January 20, 2017. (Photo by Reuters)A Palestinian protester holds a placard reading, “A warning to Trump: al-Quds is Palestine’s capital forever,” during a demonstration against the construction of illegal settlements in the occupied West Bank and against US President Donald Trump, on January 20, 2017, near the illegal settlement of Ma'ale Adumim, east of Jerusalem al-Quds. (Photo by AFP)Women hold candles and a banner during 'Lights for Rights', the Brussels Women's march, in Brussels, Belgium, on January 20, 2017, simultaneously with the inauguration of Trump. (Photo by AFP)