As I remember, the term "red line" was first sensationalized for me when hearing Obama proclaim that his red line had been crossed in the Syrian war, with Assad's use of chemical weapons. This was so serious that sharp consequences would definitely be applied.
A red line is defined as "a limit beyond which someone's behaviour is no longer acceptable".
It is not only US Presidents who hold red lines. Hopefully, we all have our red lines as they give witness to our being authentic and decent human beings. Primarily, they are not used to judge others. Rather they are upheld so we may be true to what we know to be true, right and just.
I find that this is part of my make-up, of my own personal and shared culture as a Catholic. Holding my red lines in life is primarily about me, about being true to myself, about remaining committed to my responsibilities in life.
In the last week, I had occasion to hold one of my red lines. The context was my being in the same public space as two adults acting offensively. Both parties happily partook in their action which was demeaning of them and of those who may happen to come their way, like me. This public space was the business area of a good friend whom I often greet on my way into my apartment building. I was there to await a food delivery, use the wi-fi and greet my friend.
I found I naturally had a strong internal reaction to what I was witnessing, purposefully choosing to ignore it. Still, within I could feel I was making a powerful stance to hold my red line for no one should have to put up with such behaviour in public. Internal or external forum, holding one's red line is always important. My chosen way was deliberate so as not to offend unnecessarily innocent others, friend or otherwise. My stance and chosen way were about showing respect for myself and others.
My simple action was not just for me. It was for the sake of self and others. People deserve better. My stance was made because all people matter. We must be aware of how our actions affect others and how we have responsibility for each other. We do not live on selfish, isolated islands. Human solidarity matters.
Those three key learning for humanity given to us by the pandemic just keep arising for me - respect, responsibility, solidarity. They do matter for holding onto them makes us better human beings.