cnn ed is there. reporter: ana, on the streets of downtown dlallas, this is a marching route that is now spanning several miles here through the streets of downtown dallas making its way from the cathedral in downtown to the steps of city hall. this is a pro immigration rally calling out what they view as the abusive policies of donald trump. that is what you see repeatedly. not just on questions of immigration, but of undocumented migrants are being treated by this administration. so you see this repeatedly. dr. martin luther king iii, and a great number of democratic party leaders here in the state of texas as well. a similar rally was held back in 2006 where hundreds of thousands