I do not pity the people of Venezuela. That they burned American flags and vote for Chavez, Maduro. They got what they wanted. For any action to respond. They didn't think about what people in all countries spend a lot of money to fill your car. They have gasoline cost cheaper than water.
They burned the American flags, because the US was interfering in the internal affairs of Venezuela. How the Americans would feel, if the Venezuelans interfere in their presidential or senate elections? But I would agree with you on one point. The subsidy on gasoline is just ridiculous in Venezuela.
Despite the fact that some states have problems without the intervention of other countries and they simply can not be solved. But the fact is that there are cases when this intervention can be avoided because the citizens will be very much outraged.