Turkey has detained a total 150 people for "spreading terrorist propaganda" on social media about its military campaign against a Kurdish militia in Syria since the operation began at the weekend, state media said on Wednesday.
The latest police raids focused on the western province of Izmir, but people have been detained across Turkey over their social media posts since Operation Olive Branch began in Syria's Afrin region at the weekend, state-run Anadolu agency said.
The incursion targets the U.S.-backed Syrian Kurdish YPG, viewed by Ankara as a terrorist group and an extension of the Kurdistan Workers Party (PKK), which has fought an insurgency in Turkey's largely Kurdish southeast since 1984.
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Among those detained were the provincial heads in the cities of Izmir and Aydin of the pro-Kurdish Peoples' Democratic Party (HDP), the second biggest opposition party in parliament. Ankara accuses the HDP of being linked to the PKK, a charge it denies.
HDP spokesman Ayhan Bilgen named four journalists among those arrested in the investigation into social media postings. He said the probe was targeting "those who side with peace".
"Journalists are having their doors rammed down without anyone knocking and they are being detained as if there were an army or ammunition inside," he told a news conference.
"This shows how people are afraid of keyboards, pens, words and writing," he said.
Prime Minister Binali Yildirim said social media posts criticising Turkey's operation or portraying it as an attack on Kurds were "the biggest villainy".
"Social media does not mean irresponsible media, we started holding those accountable for the crimes being committed here. We will never allow those who try to smear the operation that serves peace," Yildirim said at a conference in Ankara.
Anadolu said 91 people had been detained so far in raids against "black propaganda" across 13 provinces, with 17 detained in southeast Turkey's Diyarbakir province. Three of the detainees have been remanded in custody pending trial, it added.
Six of the 23 suspects arrested in Izmir were accused of spreading propaganda on the streets, which amounted to "harassing people", the agency said, adding that they were planning to hold a protest in a park.
Among the detainees was Leyla Guven, co-leader of the pro-Kurdish NGO Democratic Society Congress, said HDP lawmaker Bedia Ozgokce Ertan, adding that other HDP officials and senior members of the IHD human rights association were also held.
Ankara has enforced a crackdown since a failed coup in 2016 that critics say has unjustly targeted pro-Kurdish politicians. Some HDP lawmakers have been jailed on terrorism charges, which they deny.
In total, more than 50,000 people have been jailed and face trial since the attempted putsch and 150,000 have been sacked or suspended from their jobs. The government says the moves were necessary given the security threats Turkey faces.
On Monday, authorities in the capital Ankara banned all rallies, protests, meetings and concerts in the city for as long as the Afrin operation in Syria continues.