Those hyping the violence of members of the caravans have not always been honest in their claims. Which might come as no surprise from the folks that have also promoted so many crazy conspiracy theories for years now.
https://www.factcheck.org/2018/10/graphic-photos-falsely-linked-to-caravan/
https://www.rollcall.com/news/politics/energize-base-trump-caravan
"Congressional Democrats claim the military forces would be of little help due to an existing law that prevents active-duty U.S. military personnel from acting as a police force on American soil. They say Trump is using the military as a political prop to rile up his base to limit Democratic gains in the House and possibly pick up Senate seats when voters head to the polls on Tuesday."
https://www.washingtonpost.com/opin...63dbc6-ddf9-11e8-b732-3c72cbf131f2_story.html
"President Trump’s decision to send thousands of military personnel to the southern border to help turn back a group of
3,500 migrants violates a deep principle of Anglo-American law.
The principle is the prohibition of military involvement in domestic law enforcement. Its abridgement was prominent among the charges laid on King George in the Declaration of Independence — Jefferson
wrote that the crown “has affected to render the Military independent of and superior to the Civil power.” And its common law roots are far stronger and older, dating at least to Magna Carta.
The legal provision that encapsulates the principle is the Posse Comitatus Act. The law was passed in 1878, following widespread, heavy-handed use of Union troops to exercise typical law enforcement functions in the former Confederate states. In its current form, it provides criminal penalties for anyone who “willfully uses any part of the Army or Air Force as a posse comitatus” — that is, as an auxiliary of law enforcement — “or otherwise to execute the laws.” There is an exception for circumstances expressly authorized by the Constitution or an act of Congress, which Congress invoked for example in authorizing limited military involvement in the war on drugs.
Its obscure name and rare deployment notwithstanding, the Posse Comitatus Act enshrines the bedrock democratic idea that civil society is separate from and superior to military force, and that regulation of citizens by military is antithetical to liberty.
Civil law enforcement is governed by constitutional protections and accountability to the court. Military force is governed by the law of war and the imperative of national defense against other militaries. They serve critically different functions, practically and morally; and they ought not overlap."