walls made up of messages of support have been a key feature of the hong kong protests at simon fraser university in canada a man was filmed ripping down the notes. it's tactics like these that have raised concerns because they could threaten them of speech on campus. protesters also say they have been intimidated and threatened after taking part in student rallies against china with much of the abuse happening on chinese social media platforms like we chat or weibo. are they like your mama there's a student of the university of adelaide in australia has been at the number of these demonstrations where pro and anti china students have faced off against each other i began by asking how these interactions have generally been. some of the protests it does it is quite simple as the others they do get a bit heated so on one side you have. this chanting or having a couple of speeches and on the other side you have the perpetrator nice practiced . singing chinese national and the also chanting slogans a lot of these princes. open mike and we allow the chinese students to come and speak if they want to w