While web search results confirm rallies and 'hundreds' gathering at Vali-e-Asr Square, and 'tens of thousands' gathering across the country on a Friday, the specific claim that 'tens of thousands gather each night' specifically at the center of Meydan-e Vali Asr is not fully supported. The evidence shows a mix of smaller gatherings at that specific square and larger general nationwide protests, rather than a consistent nightly gathering of tens of thousands at that single location.