If they mostly stood still, without making any noise (but happened not to hug each other at the same time), it's arguable they did observe it.
Great big storm in a teacup for me but great ammo for those that need something to be offended about.
Not sure they completely ignored it. They didn't line up and link arms, but mostly appeared to stand in silence. On here, starts around 18:00.
https://youtu.be/C_dKK4wYnZM