Why do you keep posting sources that dispute your claims? From your document on the chapter on crime rates:
It does not contradict my claims. It says "longest
PERIOD of decline. . ." You're only looking at part of the graph, and then making the (bad) argument that since part of the graph has the largest downward trend in the past century, therefore crime has been decreasing for the past century.
On the other hand, I'm using the whole graph (from 1900 to 1998/1999), and looking at the entire graph, and observing that the beginning point is much, much lower than the ending point, even though for about the last 20 years of the graph it shows a downward trend.
In other words, 20 years is not a century.
Let's reduce the graph to something simpler.
The last 3 points show the longest period of decline over the entire period shown.
But that's only a third of the graph. The overall trend is upwards, even though a third of the graph is downwards.
Now, if the starting point had been higher than the the average of the y coordinates, then sure, you could say for the entire graph the trend is downwards.
Back to the graph on the PDF I shared, the same still applies. If the amount of crime was decreasing over time, then most of the points on the graph would show a downward trend. However, this is not what we see. We see that the lowest point is in ~1904, the second lowest point is in ~1963, and we are currently at a low point within the past 30 years (since 1988).
If you were to take all the points of data on that graph, and plot them where x = year and y = number of crimes committed, and then plotted the mean of those points, the line would be going up, not down.