A supermassive black hole lit up a collision of two smaller black holes:
https://www.freerepublic.com/focus/f-chat/3863747/posts
Most massive black hole in the local universe discovered :
https://www.freerepublic.com/focus/f-chat/3799516/posts
https://www.freerepublic.com/focus/search?m=all;o=time;q=quick;s=black%20hole
I’m aware that most believe they are real and, without the scientific expertise, I agree that black holes exist.
I have also seen articles and shows where some are quick to say that even though the consensus is there, we still don’t know enough to be 100% sure of what they are...which is a good thing because once the “science is settled” it becomes a religion...