Question about CzechStreet.com (Porn reality)

I know they are the porn star, but there are some video appear the girl does not agree with the suggestions of guy filming, these girls are real? The girls in the Czech can comfortably talk this way and you can shooting like that and they do not leave or angry?

Some video:
Excuse because I can not post link.

The first two student and girl eating ice cream in the Czech streets 4

photobucket .com/albums/r671/chandelier25/4.1_zpspv1echvg.png
photobucket .com/albums/r671/chandelier25/4.2_zpskcvqdnze.png

slutload .com/video/czech-streets-4-martina/E0DpCAWoJbwu


First girl in Czech Streets 26

photobucket .com/albums/r671/chandelier25/26_zps70x91ume.png

slutload .com/video/czech-streets-26-linda/ZLUkq61ymK65


The first girl in Czech Streets 1, Czech Streets 6, Czech Streets 16

slutload .com/video/czech-streets-1-julie/z0OlsegXqfIy
slutload .com/video/czech-streets-6-kristyna/DocCIzBfCxrn
slutload .com/video/czech-streets-16-hanka-lenka/Q7YhKsbOBJd5


The girl cried after sex in the toilet, 39 minutes

slutload .com/video/czech-streets-21-marketa/ntxSIAgsnJZY