ian cole has more on what to expect. >> reporter: organizers preparing their message for tomorrow's rally titled families belong together. >> the pressure so far has already changed some things. so we have to keep putting on the pressure. >> reporter: the san jose event is one of 700 plus rallies and marches across the country. there are more than 20 in the bay area. all calling for changes to the trump administration's zero tolerance immigration policy and separating families at the border. authorities say 2300 children have been taken from their parents since may. >> as someone who has worked with kids and families in the foster care system, i know how much trauma it being done. >> reporter: it follows protests earlier this week in washington, d.c. and milwaukee. just last night vice president pence appealed to the leaders of guatemala, honduras and el salvador salvador. >> i say with great respect this exodus must end. it is the threat to the security of the united states. >> reporter: even after the president signed an executive order to stop the separations and a federal judge in san