Large public meetings or protests where people gather to support a cause, or the plural of 'rally' which means a recovery or comeback.
From French 'rallier' meaning to gather again, with 'ral-' being a prefix meaning again. It came to mean large public gatherings in the political sense during the 20th century.
Some of the most famous 'rallies' in history actually changed laws—like civil rights rallies in the 1960s that led to new voting rights. Modern rallies use social media to organize crowds instantly, whereas historical rallies took weeks to plan through word-of-mouth and newspapers.
Complete word intelligence in one call. Free tier — 50 lookups/day.