This is a united pro-communist group, right? The hand holding the rose is the socialdemocracy's(capitalist) symbol.

Photoshopping it out would be kind of a hassle. Also I'm not sure if actual socialists use the rose.

Socialists dont use the rose, Socialdemocrats use it, its their symbol: However theres more important things than photoshopping it out.

Democratic Socialists use it. So does the Socialist International

Yes, actual Socialists use the rose. A Socialist organization (mainly Trotskyite in identity) which makes up the most left wing faction of our Social Democratic Party, the NDP, called the Socialist Caucus.

I added it to attempt to symbolize cooperate (not entryism) with the left-wing factions of the mainstream political parties - though, this is more applicable in some countries than others.

Socialist Party of Wisconsin uses the rose symbol. They CLAIM to be socialist, but they act more like progressive democrats.

They have the potential to be actual leftists

It's not in the interest of Pan-Leftism to talk about excluding one symbol arbitrarily, is it?

And, in Canada, there are true Socialist organizations which use the rose.