I have some bad news for you, although it's good news for everyone else. 2013 was the safest year on record for US law enforcement in recorded history, and 2015 was the second safest year for US law enforcement in the recorded history of this country. Violence against law enforcement, especially gun violence, has been steadily and consistently decreasing for 20 plus years. Attacks with edged weapons have been a little more inconsistent, but rolling 5-year and 10-year averages have also gone in a generally downward direction.
The most dangerous time for law enforcement in US history was exactly during the Prohibition era. The sale and movement of alcohol became illegal, and the murder rate of law enforcement immediately skyrocketed to unparalleled levels. It stayed that way until Prohibition ended, and this violence almost completely went away, then gradually came down a bit more. Let me put it this way- even though there were less than half as many people in the US at the time, there was over three times as many law enforcement getting killed compared to what it is now. As bad as that was- and that is by far the worst it ever was- the United States did not descend into anarchy. To the contrary- this was the inter-war period, the armistice period you might say- the US emerged from this by winning World War II and becoming a global superpower.
More to the point, Trump lied. A lot. He's not even telling the same lies now, he's currently not suggesting mass deportations. Even more to the point, the type of widespread violence you're describing would not happen even if this scenario did play out. Comparisons are being made to internment camps, right? Well, think back to those actual internment camps. Not just Japanese people, although it was mostly that, but some Germans were targeted as well. Think hard- was there a widespread violent backlash? Did a state of anarchy seem like a remotely plausible outcome at the time? Forget about ethnic stereotypes for a moment, it doesn't even matter if we're talking about Hispanics or Japanese people or German people. Just focus for a second on what actually happened. There were internment camps, they were awful, that was wrong- did that lead to insanely violent urban warfare on US soil? Did that lead to a huge spike in violence against law enforcement?
Did it?
The point is, anarchy won't happen here. There are no possible circumstances under which that will happen, even with a Trump presidency (awful though it may be). And US law enforcement is working through some things, it's got some strained relationships going on with certain communities (like it always has), but overall US law enforcement has never been more safe and we are working through all our stuff so it can be even better.
Once again, anarchy's not going to happen here. Chaos and horrific violence against law enforcement is not going to happen. Their worst days are behind them, it won't ever be that bad again, and even if it did, anarchy is just not going to happen. It's not gonna happen, no not gonna happen.
Not gonna happen.