This is an invasion

invasions dont always include weapons you know

Voting

using their fists

Yes they do, that's like the literal definition and everything.

There’s literally so many of them, they don’t even need guns

Here is the literal defintion:
invasion noun
in·?va·?sion | in-?v?-zh?n
Definition of invasion
1 : an act of invading
especially : incursion of an army for conquest or plunder
2 : the incoming or spread of something usually hurtful

https://www.merriam-webster.com/dictionary/invasion
There is the definition for literal there too.

And here is the definition for "army" for when you focus in on that. I'm sure you'll see definition 2 & 3 suit the description of that "caravan".
army noun
ar·?my | ?är-m?
plural armies
Definition of army
1a : a large organized body of armed personnel trained for war especially on land
b : a unit capable of independent action and consisting usually of a headquarters, two or more corps, and auxiliary troops
c often capitalized : the complete military organization of a nation for land warfare
2 : a great multitude
an army of birds
3 : a body of persons organized to advance a cause

https://www.merriam-webster.com/dictionary/army

We haven't taken a look in their bags have we? The cartel plays a huge part in funding.