In Spain, grassroots movements revive interest in politics

By Sonya Dowsett and Inmaculada Sanz MADRID (Reuters) - In an apartment block in central Madrid, homeowners and tenants in danger of being evicted gather every Thursday to plan awareness campaigns and get free advice from lawyers. 'The Mortgage Victims' Association', or PAH - its initials in Spanish, has stopped hundreds of evictions and is one of many grassroots campaigns to rise from Spain's brutal six-year economic downturn in a popular revival of political involvement. &q