Some tips:

1) Fix the name and screenshots:
The game dynamics are geared towards people that dislike Trump, or at least his wall idea, and yet
A) Your game title is "Trump's Great Wall"
B) The icon is a picture of Trump's face
C) The first two screenshots show Trump happily building his wall.

Nobody that dislikes Trump is going to click on your game to see more details, and if they do, the first two screenshots they see would make them leave anyway. Change the name to something along the lines of, "Break Trump's Wall", and move your 3rd screenshot to be the first screenshot (i.e. the one showing a pissed off Trump). I would also add a screenshot of the rocket being used (especially if there's an explosion) to make it more clear.

2) Once you've fixed the points above, post about the game in places that have a strong dislike for Trump. There are many online communities and forums that would probably love the idea of game and would spread the link to friends.

If you'd like more specific advice on relevant places to post your game, and additional advice on how to market it, let me know,

best,

Lee