(HW) Let's drown supermarkets in their own trash

Us customers carry great responsibility. We might not be aware of the power we hold over what is available in shops and what won't be and I have come to the colnclusion that many people tend to believe that "one single person cannot make a change". The more I have thought about it, the more I am led to believe that actually, maybe, we cannot even blame big comanies for producing GMO food because as long as there are people buying it, what reason should they have to make a change? We as humans have a way greater impact on the food-chain and what arrives in the shiny supermarket shelves than we are aware of. A little example: growing up as a kid with allergies, I stil remember how in my childhood, there was only one brand that produced soymilk (which tasted awful and like cardboard). Nowadays, where veganism is becomming more mainstream and popular, there are almost more milk alternatives than actual milk brands in local markets - how is that? Demands. There are poeple, who are ready to actually leave complaints or requests. Being born a daughter to a father who is A+ at imediately and personally voicing  demands at supermarkets that wouldn't even occur to me to utter - I know it does work eventually most of the time. (But ugh, comfort zone issues I know...) Either with the more active claim of telling the manager or the passive way of buying/not buying a certain product, we shape the market. In a lecture about waste management, I learnt, that technically if customers decided to imediately unpack our newly bought goods in the palce they are sold and dump the trash there, they must keep it as it still falls under their responsibility. So what if everyone suddenly refused to take packaging home?