Stopping illegal immigration would mean that wages would have to rise to a level where Americans would want the jobs currently taken by illegal aliens.

Blacks were not enslaved because they were black but because they were available. Slavery has existed in the world for thousands of years. Whites enslaved other whites in Europe for centuries before the first black was brought to the Western hemisphere. Asians enslaved Europeans. Asians enslaved other Asians. Africans enslaved other Africans, and indeed even today in North Africa, blacks continue to enslave blacks.

One of the reasons for conspiracy theories is an assumption that people in high places always know what they are doing. When they do something that makes no sense, devious reasons are imagined by conspiracy theorists, when in fact it may be due to plain old ignorance and incompetence.

The real problem, both in discussions of mass shootings and in discussions of gun control, is that too many people are too committed to a vision to allow mere facts to interfere with their beliefs, and the sense of superiority that those beliefs give them.

Why is history important? Without history, many people have no idea how many of today's half-baked ideas have been tried, again and again - and have repeatedly led to disaster. Most of these ideas are not new. They are just being recycled with re-treaded rhetoric.

There is usually only a limited amount of damage that can be done by dull or stupid people. For creating a truly monumental disaster, you need people with high IQs.