Provide the theme summaries for the following conversation: 

Lena: i'm on my way to the movies, hope i'll arrive safe.
Enid: why?
Lena: it's like civil war outside
Enid: what's happen?
Lena: policemen, smoke, screams, it's terrific!
Enid: the strike?
Lena: not only people on the street, but all theses hooligans.
Enid: you can't avoid them?
Lena: no, i'm just terrified
Enid: stay away or go back home.
Lena: but i have to meet Ollie at the movies in 15 minutes
Enid: keep your calm.
Lena: ok ok. I'll stay behind the policemen. They're heading towards the post office, that's my way.
Enid: Let me know when you're safe in the movies
Lena: ok i will, it seems a bit more quiet now

Summary: 
Lena is heading to meet Ollie at the movies in 15 minutes. There's a strike and riots going on outside, and Lena is worried about her own safety. Lena will stay behind the policemen that are going the same way as her. The riots seem quieter now. Lena will let Enid know when she's at the movies.