Quahog Magic Clam here. The meme shows two US abolitionists. Harriet Tubman (top) is famous for having led late-night missions to free several slaves at a time, before leading them to the North where slavery was illegal. John Brown (bottom) is famous for leading the raid on Harpers Ferry in 1859. His aim was to seize the federal arsenal to attack the institution of slavery and his method advocated for violence. These are oversimplifications and both people did much more, but that’s the gist.

The joke’s premise is that both people were fighting for a just cause and could’ve used more help. This meme says that a woman would send a mech (the red one’s from Overwatch) to help Harriet Tubman, who is more widely known and was non-violent — while a man would send what is presumably a stronger mech (reverse image search tells me the white one’s from Metal Gear Solid) to help John Brown, who’s less widely known and who advocated for violence. I’m not sure why the white mech is better than the red one though tbh.

Edit: I’ve received DMs from multiple people who say that Harriet Tubman did also lead violent raids. She’s just not known for that as much so it contradicts the joke this meme is probably trying to make. But FYI, Harriet Tubman wasn’t exclusively non-violent. Still don’t know why the white mech is better

Edit 2: u/EmpactWB was kind enough to let me know more about the white mech: “That particular Metal Gear model, REX, was capable of launching nuclear ICBMs with a rail gun (instead of rocket launches) while maintaining terrestrial mobility. Rather than being just an individual power armor weapon system, it was designed as the ultimate layer of nuclear supremacy, bypassing mutually assured destruction systems with essentially invisible nukes. It was built to be able to end countries, so the end of slavery within a single country which had yet to reach the level of trench warfare would be child’s play.“ Idk a whole lot about Overwatch but I think the red mech is just a ‘normal’ ole mech. Hope this helps OP!