There is something I want sighted people to understand about blind people. If you see a blind person heading toward a wall, tree, bench, or any other object they might bump into and potentially get injured, it doesn’t necessarily mean you should immediately try to pull them out of the way. It's completely natural to feel concerned, but a better approach would be to just warn them and ask if they need help. While there are times when it's actually needed, it might also be that they are going toward a landmark they use for orientation, and as unfortunate as it is, you might unintentionally get them confused and disorientated. I often purposely look for such objects to better remember the route, and not all places are accessible enough for me to be able to get back on track if I take a wrong turn. Your help and concern are really appreciated a lot, but sometimes things are different from how they seem, and that's why it's always better to ask first.