Critical Mass bike demonstrations in Budapest started as a way to advocate for more bike-friendly streets and policies. Organizers found that having a large, peaceful group of cyclists could draw attention to their cause. They reached out to politicians, the media, and various communities to build popularity for their movement. Over time, the goal expanded from advocacy to actual integration of bicycles into the city's transportation system. This resulted in new bike lanes and infrastructure being built, showing that by growing their numbers and coalition, Critical Mass achieved real changes for cycling in Budapest.