We can educate them that this activity leads to the bad condition of our country.
In order to stop people from littering...we should make them aware about its bad effects..n it's impact on our earth. We can conduct some awareness campaigns. we can publish posters. We can show some short films on this through which we can motivate people to stop littering. articles can be written about this habit of people n hw it affects the environment. Also the government should take some inatiatives to save our environment. Some measures should be made. N before tht we should be the change. We r the ones who should make some difference . CLEAN INDIA... MY DREAM INDIA.. Be the change tht u wish to see in the world. Hope it helped :)