There's no rape, Ragnar spares innocents and treats his slave humanely, they just explain he's not the norm in thinly veiled history conversation lectures to try and retain some credibility. It's a piss weak way of handling everything but the show is still massively entertaining, Ragnar is awesome.
			
			 
				
		 
 
		 
                                 
 
		 
                                 
                                 
                                 
 
		 
 
		 
                                 
                                 
                                 
                                 
 
		 
 
		 
                                 
 
		