Grassroots activists from all 50 states– riding on some 450 buses — on Saturday rallied at the nation’s capitol to protest what they called an encroachment of federal government power in their lives. The event, sponsored nationally by FreedomWorks, was the culmination of nearly six months of tea-party protest rallies held across America since February 27. Organizers said nearly 200 events in 45 states were being held…