Why the why the fuck are the military types moving TOWARD the crowd

[underpants]

The crowd are, as you world expect, just like protesting.

Oh shit. CNN reporting tear gas may be employed.

[elleng]

1. 'Someone' told them to look aggressive.

[pwb]

2. What is it a gun nut rally? alright.

Oh wait never mind.

[Freethinker65]

3. Backdrop production for the Great and Powerful Oz

Trump is making his dream come true! Trump sees it as getting back at everyone that has ever ridiculed him.

[EarlG]

4. Trump is about to "dominate the battlespace"

[brooklynite]

5. They're pushing crowds down H Street to Connecticut Ave...

...away from Lafayette Park

[jpak]

6. Dominance

Tear gas now

[LizBeth]

7. Cause little Donnie is afraid.

[CentralMass]

8. Edited. I hadn't fully read and understood the context and situation at the protest.

I had original commented on how in Portland the police seemed to have been using tear gas and flash bangs as a last resort. Typically late night/early morning when those bent on vandalizing and looting hijacked the peaceful protests of the day.
This situation in DC appears to have been an unprovoked use of tear gas.