The White House is ready for you, according to the counter-protest handbook the Washington Post read.

To counter any demonstrators who do get in, advance teams are told to create "rally squads" of volunteers with large hand-held signs, placards or banners with "favorable messages." Squads should be placed in strategic locations and "at least one squad should be 'roaming' throughout the perimeter of the event to look for potential problems," the manual says.

...

"If the demonstrators are yelling, rally squads can begin and lead supportive chants to drown out the protesters (USA!, USA!, USA!). As a last resort, security should remove the demonstrators from the event site."

But none of that is operative if the protesters can't be seen by reporters.

"If it is determined that the media will not see or hear them and that they pose no potential disruption to the event, they can be ignored. On the other hand, if the group is carrying signs, trying to shout down the President, or has the potential to cause some greater disruption to the event, action needs to be taken immediately to minimize the demonstrator's effect."