rtokens: Police also confiscated eight kg ( 18 lb ) of screws , balaclavas and spray paint cans .
pos: VBN NNS VBD VBG NNS CC JJ NNS IN NN IN NNP IN DT NN VBD IN NNP NNP , DT JJ NN IN JJ JJ NN NNP .
tokens: Hooded protesters threw burning bottles and other objects at police in Pamplona after the protest organised by Herri Batasuna , the political wing of Basque separatist group ETA .
ltokens: Spanish police said on Friday they had arrested five people and seized more than 90 petrol bombs during disturbances after a protest in the Basque country against Spain 's constitution .