The act of attending rallies, marches, conferences, or other activist-related events in the hopes of meeting attractive activists. A portmanteau of "to mack" and "activism."
One who participates in macktivism is said to be a "macktivist."
I met the cutest boy at the US Social Forum in Detroit last summer -so glad we decided to get our macktivism on!
The Campus Libertarians never get laid because macktivists just aren't interested.