Demonstrators were holding sit-down protests in groups of 100 or 200, according to the police, calling for the "people's supremacy".
Demonstrators were holding Trump signs and placards accusing Hillary Clinton of being the North American version of Dilma Roussef (the former Brazilian president who was impeached last August), while some were wearing shirts printed with the face of Brazilian far-right politician Jair Bolsonaro.
In Croatia, protests were held in Zagreb, Split and Rijeka, with demonstrators, some masked, carrying banners reading: "Stop internet censorship".
The police said the arrested demonstrators were being held at various police stations and that they would be charged, at a minimum, with disorderly conduct.
Protest organizers said their rights had been trampled by overzealous officers -- that groups of demonstrators had been held for more than 30 hours without food and water.
The demands were mainly for the release of prisoners demonstrators say are held without trial.
The arrests were completed by 2 40 a.m., but as of 3 00 p.m. on October 23, 2011, over 100 demonstrators were still being held by police.
Demonstrators appeared to be being held for 10-15 minute periods before being allowed to continue on the route of the march.
