Resolved questions
What do जो चाहे and यहां तक की पॉलिथीन mean in this paragraph?

here it is jo chahe karna 'जो चाहे करना' - means to do whatever one wants to,
यहाँ तक कि - increases the significance of the event which follows, or the upcoming event is being emphasised, in english "even ...."

its about massacre of a city, the line reads as

यहाँ तक कि औरतों बच्चों को भी नहीं छोड़ा गया.
even women and children were not spared.