"I asked a couple of months ago if anyone would like to start picketing the gas stations"

In this quote, Ron Ziegler is referencing a previous demand he made a few months earlier. He asked if anyone would be interested in taking part in a form of protest referred to as picketing at gas stations. Picketing involves standing outside of an organization or company and displaying indications or banners to accentuate a specific issue or cause. Ziegler's request recommends that there may be some sort of problem or controversy surrounding gasoline station that he thinks is very important enough to warrant this type of action. It is unclear what particular concern he is referring to, however it is clear that he is looking for support and involvement from others in this prospective protest.