Thousands of people marched through Spain's capital,  Madrid , on Sunday, protesting soaring rents, high home prices and a growing housing shortage. Organizers said more than 100,000 people joined the march, while authorities put the figure at about 23,000. The demonstration, organized by the Madrid Tenants' Union and backed by Spain's two main trade unions, comes despite recent action by Prime Minister Pedro Sanchez's government to tackle the housing crisis . "Housing measures, although some are moving in the right direction, are advancing at a snail's pace, while the housing crisis is escalating rapidly," Unai Sordo, secretary general of the CCOO union, said. Housing shortage worsening Spain's central bank says that between 2021 and 2025, the number of new households grew faster than the number of new homes built, leading to a shortage of about 700,000 homes.…