welcome back. thousands of anti-vaxxers are expected to descend on washington, d.c. tomorrow for a major rally, but that s just one demonstration with the potential for conflict that has law enforcement in the nation s capitol on alert. cnn national correspondent suzanne malveaux joining us with more on this. how are authorities preparing for this? reporter: good afternoon, fred. d.c. is bustling with activity this weekend and we re talking about hot topic emotional issues that impact us all. today the focus is on abortion around the 49th anniversary of roe v. wade, former vice president mike pence speaking at the national pro life summit earlier today, joining anti-choice activists while you have counterprotesters advocating for abortion rights. they are rallying outside the supreme court. all eyes, however, are on tomorrow. that is the fight over vaccine mandates, which will play out on the national mall. now, the national park service says that various groups opposing vaccine mand