Tell ya what - I don't know where Imgflippers reside, but it seems many of them are deep in the rural backwoods or in the lily-white suburban exurbs - maybe "white lives matter" flies out there, but if you're brave, do a little social experiment in any urban district in America:
Wear an "All Lives Matter" shirt and see if you don't get yourself funny looks, at best - wear a "White Lives Matter" shirt and get yourself promptly ejected from any self-respecting establishment before you inadvertently cause a verbal altercation or actual fisticuffs.
Why?
Most of us in Blue America realize that both these slogans are obviously patterned on BLM (which came first) and are each in their own way attempts to hijack the movement for racial progress and equity that #BlackLivesMatter embodies -- a slogan which, unlike the other two we're discussing, is backed by a tangible movement for advancing the rights of real people that aims to effect, and is actually effecting, positive changes in our world. (See: meme)
Most of us who live in urban America, if we're not actually black ourselves, have black friends (a cliche, yes, but it's one thing that matters) and live and work in close enough proximity to black people to understand their struggle for equity and why a slogan as basic as #BlackLivesMatter is sadly necessary.
tl;dr It's not enough to evaluate the slogans on their own terms. We need context, folks, context