The situation you're asking about happened already two weeks ago on Friday the 4th. On that day I stayed in the neverland hostel and just read the embarrasing news about what happened the night before to the HDP polititians. I decided to write some paper signs with "Free Dermirtas" and tagged them to some walls i just passed. That was about 8 pm. Afterwards I stayed in the Hostel again with some friends, talking about the situation and the hostel staff warned me to be careful with actions like this, because you can never know, wether there are civil policemen around.
“Ev bûyera ez behsê dikim şeva 4ê Mijdarê roja Înê pêk hat. Ez li Beyogluyê li hosteleke dimanyam. Parlementerên HDPê hatibûn girtin û min wan nûçeyên rûreşiyê xwendin. Min li ser hin kaxizan “Free Demritaş (Ji Demirtaş re Azadî)” nivîsandin û min biryar da ku ez ê van kaxizan li cihê ku ez jî derbas dibim ve daliqînim. Saet dora 8an bû. Piştre ez zivirîme hostelê. Dema ez derbarê vê de bi hevalê xwe re diaxivîm, xebarkarên hostelê ji min re gotin ku ji ber vê yekê divê ez miqatê xwe bim ku li derdor gelek polîsên sivîl hene.