Assailants torched two broadcast trucks in this West Bank city, prompting a protest rally by Palestinian journalists on Saturday.
The vehicles, owned by the Palestinian Media and Communication Company, a private production company, were set on fire Friday evening, the AP said.
There was no claim of responsibility and security officials said they had no leads.
The manager of the company, Maher Shalabi, blamed growing lawlessness in the Palestinian territories. "The press is becoming a goal for aggression," Shalabi said.
About 30 journalists staged a protest rally in downtown Ramallah on Saturday.
"This is a message directed to all journalists, especially those who try to deliver this story in a true and neutral way," said Nader Shiyoukhi, a reporter for the Lebanese TV channel ANB. "Defend the journalists," read a banner carried by the journalists.
Last year, three cars owned by the Arab satellite TV station Al Jazeera were burned, including a broadcast truck.
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