PORTLAND, Ore. (AP) — Police arrested about 30 demonstrators early Sunday with the Occupy Portland movement after they refused to leave a park in an affluent district after a midnight curfew.Police pulled vans up to a group of about 27-30 protesters sitting in a circle at Jamison Square and began arresting them one-by-one.An Associated Press photographer says most of the protesters went limp and police carried or dragged them away. There was no violence during the 90-minute period of arrests.The protesters — all appearing to be in their 20s and 30s — were handcuffed before they were driven off. One continued to chant "we are the 99 percent."Dozens of other protesters remained on the edges of the park in a show of support, but the crowd thinned out around 3:30 a.m. as the last arrests were made.