The rail workers were all paid, please provide a single example of a slave auction:

"No system similar to slavery, serfdom or peonage prevails among these laborers. Their wages, which are always paid in coin, at the end of each month, are divided among them by their agents, who attend to their business, in proportion to the labor done by each person. These agents are generally American or Chinese merchants, who furnish them their supplies of food, the value of which they deduct from their monthly pay."

http://cprr.org/Museum/Chinese.html

The Asian-American left is basically the same as white SJWs who want to demolish statues that they are ignorant of the history behind. The Asians are completely ignorant of the history of Chinese immigrants.