In a video interview (in Russian) with a Putin supporter that surfaced recently, the host asks his guest, "What do you think of this quote?"
Here's the text of the alleged quote:
Opposition figures throw mud at our country. They work for money that they get from the west. They live on money from the USA and are obedient dogs of their trans-oceanic masters. All so-called opposition parties are enemies of our people.
The guest says "Brilliant, perfectly said".
The host then proceeds to reveal that the quote would be a few sentences from a speech supposedly given by Joseph Goebbels on 12 March 1933.
I have not been able to verify this anywhere. I can't even find a source that states Goebbels did indeed give a speech on 12 March 1933.