Molotov cocktails are lit to keep the fires burning out on Rama 4 road. The smoke prevents the snipers from having a clear view of the "red shirt" barricades down at the intersection of Rama 4 with Soi Suwan Sawet.
<a href="//commons.wikimedia.org/wiki/User:Takeaway" title="User:Takeaway">Takeaway</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>