What is 'the left?"
In a nutshell it include all who wholly or in part represent:
1. Those who deny and reject most of the principles upon which the Founders established the Constitution and a new nation, and justify that rejection because all modern concepts or values were not included. To them the Constitution is valid only when it supports what they want to support.
2. Those with a Marxist mentality--the belief that nobody should really own or control property but that it all belongs to all to be divided according to the needs of each.
3. Those who would force one group/demographic to give up their cherished values and principles in favor of 'more noble' concepts, with the Left of course dictating to the whole what those 'more noble' concepts will be.
4. Those who see motive as more important than conduct or consequences.
5. Those who look to government as the enabler, protector, and benefactor of all society and all that should be.
6. Those who see America as inferior to other nations that they think have better values, attitudes, and lifestyles.
Source?
The source is me. Otherwise I would have provided a link.