Jane Fonda says, known for her stand against the Vietnam war nearly 50 years ago, was arrested for civil disobedience as a climate protestor.
Marches also held in Australia and Taiwan, with more planned in Europe and North America later during the day.
US lawmakers express concern that American-made equipment is being used by Hong Kong police against demonstrators.
Police issue a statement expressing "severe condemnation" after what began as a mostly peaceful protest had spiralled into violence in some of the Chinese territory's key business, shopping and tourist districts.
An informal but widespread boycott by students, shopkeepers, and public and private sector workers is in effect to protest India's lockdown after it scrapped the disputed region's limited autonomy angering locals and neighbouring Pakistan.
The operator of the express train to Hong Kong's airport has suspended service as anti-Beijing protesters gathered there following a day of violent clashes with police.
In the first hearing, an investigator said Sudan's deposed president Omar al Bashir had admitted to receiving at least $90 million in cash from Saudi royals in recent years.
The biggest rally is expected to take place on Sunday on the main island.
China's ambassador to the United Kingdom said Beijing would use its power to quell Hong Kong protests if the situation deteriorates further.
The movement's protests blocked routes in different cities of the UK bringing boats with the slogan "Act Now" to raise awareness on climate change.
Millions have thronged the streets in the past three weeks to demand the bill, which would allow criminal suspects to be sent to the mainland for trial in courts controlled by the Chinese Communist Party, be scrapped.
Protesters in Hong Kong left the streets, averting possible clashes after haggling for hours with police by moving to areas near the city's government headquarters.
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