All you have to do is to learn to read. If you go to the beginning of
the chapter, you will find Babylon which is referenced as "her"
throughout the chapter. Now, if it is Babylon who you wish to identify,
that's not tough either. Both Judaism and thus Christianity have taken
significant portions of their belief systems from the Babylonians (as well as
other nations including Persia and Egypt - Judaism is not monolithic), and have
incorporated it into their beliefs. Both Judaism and Christianity have
killed a great many saints and prophets over the centuries - not just ancient
Judaism or the medieval Catholic church, but the modern church as well.
The modern evangelicals are spiritually killing saints and prophets today -
anyone who doesn't believe exactly as they do.
Revelation 18:1-2 After this I saw another angel coming down from
heaven, having great authority; and the earth was made bright with his splendor.
And he called out with a mighty voice,