It's all 'big feelings' made flesh, isn't it?
Expressing emotions is fine, in the proper context. In a therapy session, or talking with loved ones, chatting with close friends we can all 'get our rage and sorrow out'.
It's not part of the social contract to expect everyone to listen to your 'rage and sorrow' by force, just because you want to express it, though.
In fact the very first and important part of all the 'active listening' stuff is to ensure that you are in a safe, controlled setting. It's highly irresponsible to encourage performative emotional splurging in public, especially encouraging children to put themselves at physical risk, either with dangerous stunts or by breaking the law and riling up the Glasgow polis.
Children are being used and put in harms way by this movement. It's grotesque.