Women in Brussels 'filmed without their knowledge' by men wearing Meta smart glasses
(www.brusselstimes.com)
There is a difference between surveillance by a democratically elected government and some random dude though.
I.e. in Germany homeowners are only allowed to film their own property. The cameras field of view may not reach into public space.
Also while photography in public spaces is generally allowed, people may demand the deletion of photos showing their face.