hot-button issue

A topic or subject that is highly politicized or emotionally charged. Primarily heard in US. Wealth redistribution is a hot-button issue on both sides of the political aisle this election season. The issue of gentrification has been a hot-button issue in this part of town for years, as it has forced many long-time residents and local businesses out of the area. The latest hot-button issue in the world of video games is the idea of digital distribution replacing physical media.