A Speakers' Corner is an area where open-air public speaking, debate and discussion are allowed. The original and most noted is in the northeast corner of Hyde Park in London, UK. Speakers here may talk on any subject, as long as the police consider their speeches lawful, although this right is not restricted to Speakers' Corner only. Contrary to popular belief, there is no immunity from the law, nor are any subjects proscribed, but in practice the police tend to be tolerant and therefore intervene only when they receive a complaint. On some occasions in the past, they have intervened on grounds of profanity. Historically there were a number of other areas designated as Speakers' Corners in other parks in London (e.g., Lincoln's Inn Fields Finsbury Park, Clapham Common, Kennington Park, and Victoria Park). More recently they have been set up in other British cities, and there are also Speakers' Corners in other countries.
Though Hyde Park Speakers' Corner is considered the paved area closest to Marble Arch, legally the public speaking area extends beyond the Reform Tree and covers a large area from Marble Arch to Victoria Gate, then along the Serpentine to Hyde Park Corner and the Broad Walk running from Hyde Park Corner to Marble Arch.
Public riots broke out in the park in 1855, in protest over the Sunday Trading Bill, which forbade buying and selling on a Sunday, the only day working people had off. The riots were described by Karl Marx as the beginning of the English revolution.
The Chartist movement used Hyde Park as a point of assembly for workers' protests, but no permanent speaking location was established. The Reform League organised a massive demonstration in 1866 and then again in 1867, which compelled the government to extend the franchise to include most working-class men.