Advertising is supposed to make people buy certain products. However, that is not only what advertising is about. David Ogilvy, probably the biggest name in advertising, once said, 

Advertising justifies its existence when used in the public interest—it is much too powerful a tool to use solely for commercial purposes.

However, today, we hardly see advertising being used for any meaningful purpose. Most of the ads we see on television and in print tend to exploit that corner inside us which craves for products that we know deep down are of no use and are going to do us no good. Luckily for us, there are some agencies around the world that use advertisements to try and raise awareness about social issues we all should know about. Issues that are harming the environment, creating conflicts in the world, and harming our own personal health.

Here's a look at 28 of these powerful and shocking advertisements. 

1. Smoking isn't helping you add more candles to your birthday cake.

Source: Adsoftheworld

2. Stop hiding if you're facing violence inside your home.

Source: InspireWeTrust

3. Let your children have a childhood they'd want to remember

Source: Casadomenor

4. It's easy to drown after you're a few drinks down. It's important to stay cautious. 

Source: Adweek

5. Guns are not toys, children are not meant for wars.

Source: SaveTheChildren

5. When you kill adult animals, imagine what would happen to your children if you weren't around.

Source: Inspiration

6. If the ice caps melt, it's not going to be good for anyone.

Source: WWF

7. No, liking and sharing on Facebook isn't helping.

Source: DPReview

8. Dying, or killing for faith, makes no sense.

Source: Independent

9. Let's not have our animals eat our trash. 

Source: WSJ

10. When you're driving, please just drive. 

Source: WashingtonPost

11. What if you were castrated like a pig or skinned like a mink.

Source: Peta

12. Patience is a virtue, practise it on your children.

Source: GoodParent

13. Stop the torture, already.

Source: Boredpanda

14. If you're smoking, you've been enslaved by tobacco.

Source: Highsnobiety

15. It is a vicious cycle. 

Source: DigitalSynopsis

16. It's high time we recognise that half our population is equal to the other half. 

Source: UNWomen

17. Treat others the way you want to be treated.

Source: Demilked

18. Adopting a dog can have only positive side-effects.

Source: Caraphil

19. Let's stop using animals for our entertainment.

Source: LPDA

20. Killing reporters never does any good to anyone.

Source: ReportersWithoutBorders

21. Get a voice, speak up. Report abuse.

Source: Endavnow

22. Not the uniform a child should don.

Source: AdsOfTheWeek

23. You should understand what's wrong.

Source: BusinessInsider

24. Let's stop glorifying unhealthy body standards.

Source: EatingDisordersHope

25. Children are impressionable. 

Source: StopChildAbuse

26. You can call the firefighters, the animals in the forest can't.

Source: Demilked

27. The fur should stay where it belongs.

Source: Buzzfeed

28. Adopt a pet.

Source: Caraphil

We just hope some of these force you to think about how you can help to change the world!