What does it mean if a house has a red bandana tied around a tree in the front yard?

A red bandana tied around a tree in a front yard often signifies that the household is a safe space for LGBTQ+ individuals, particularly indicating support for the leather community and BDSM culture. It can also represent a welcoming environment for those seeking refuge or assistance. However, the meaning can vary by community, so it's essential to consider local context.