What even is the "far" left agenda?
My guess....
College tuition being free
Single payer health care
Government imposed limits on CEO/executive pay
$15 dollar minimum wage or higher
Significant government action relating to climate change (carbon tax, increase tax and regulation on fossil fuels companies, massive subsidies for alternative fuels)
Amnesty for all currently here illegal, massive widening of our immigration policy focused on low income, low educated, and or diverse populations in an effort to provide them a better chance.
Significant increase in tax on the upper income earners via numerous forms (income tax, death tax, cap gains tax, etc)
Taking efforts to equate sexual orientation and gender orientation as classifications under the law on even footing with race
Substantial decrease in military spending, size, and investment
Significant gun control actions such as a wider banning and/or significant limiting of certain types of weapons, magazines, and ammo and potentially registration of weapons
However, I would imagine...by and large...it'd be similar to asking what the "far" right agenda is if someone was actually being honest, not rhetorical in a rush to just propagandize, with such a question. The easy answer, in both instances, is "pretty much the same agenda as the 'staunch' or 'moderate' [left/right], only pushed to a wider/more significant degree".
A "far left" agenda is going to be focused around climate change, social services, reducing the scope of the military and guns, minority rights, more open and caring immigration, and siphoning greater money away from the "wealthy"; much like any "left" agenda in the US. The question is simply the degree and scope.
Similar to how a "far right" agenda is going to focus around limiting government influence into businesses and the individual, robust support of defense both nationally and with the individual, protection for and embracing of traditions and cultural norms, a more selective and secure immigration policy, and minimizing the transfer of wealth via government means. Like above, the difference between the "far" and "stuanch" or "moderate" wings is a matter of degree and scope.