The danger with this approach is that you will end up with Economism, the trend fought into the ground by Lenin which, rather than advocating socialist revolution, preached for intellectuals to control politics and workers to stick to "economic" or trade union struggles.
Similarly, pinning great radical hopes on Bernie Sanders (who stands for class-dividing import controls, like most US trade unions) or the UK's Jeremy Corbyn is a fool's game. These movements are like the populist 'left' movement Podemos in Spain or Syriza in Greece.
These "anti-austerity" movements are flash-in-the-pan social-democratic frauds. Hundreds of thousands of trade unionists and left-wingers and radical students get involved. These movements can even win elections and get into government, as Syriza did in Greece. But they go nowhere, and achieve NOTHING in terms of working class progress, EXCEPT by exposing how useless all such class-compromising reformist politics are.
World capitalism and the US Empire are in deep, deep crisis and need renewed destructive trade war and real shooting war to totter on to the next boom-slump-war devastating crisis. Hence the savage destruction wrought on the Middle East by crazed US firepower and drone-striking. Hence the constant threats of nuclear first strikes against Washington-termed "rogue states", such as North Korea. This is the essence of modern, decaying monopoly-capitalism. (See Lenin's "Imperialism - the Highest Stage of Capitalism".)
Unless the politics are about taking POWER by communist party-led socialist revolution - Leninism - they are just great deceptions of the working people.
But while the ideology of communist revolution should be sweeping vigorously across the planet right now, it has taken a hammering instead from decades of irrational Cold War propaganda, the Soviet leadership's dunderheaded Stalinist revisionism, the Trotskyist 'left's middle-class anti-Sovietism and finally the USSR's and other workers states' liquidation by Gorbachev.
So there is a massive role to be played by those advanced workers and intellectuals who want to get the historic record straight and battle for Leninism to once again take the head of the international workers movement.
Analysing world events correctly and putting out that understanding for open polemical struggle is the only way to go (see epsr.org.uk). Once a critical mass of workers start rebuilding Leninist communist parties in the USA, France, Germany, the UK, Italy, Brazil etc - the game will be close to up for the super-exploiting, warmongering capitalist ruling class.
Only by establishing the dictatorship of the proletariat in country after country in the world will all the alienated turmoil on the planet be civilized out of existence.
"Fighting racism" now, alone, will never end racism, since all such mystical garbage springs out of capitalist society decay and confusion. And when warmongering, decaying brutal monopoly capitalism had a Democrat black man in the White House there was still no closure of the Git-bay torture camp, just more drone-striking of Pakistan and Afghanistan than ever before and more attempted (but seen through) buttering up of the dismayed and impoverished across America.
The fraudulent "war on terror" under Bush and Obama simply paved the way for the renewed miserably-defeatist-Mussolini style bombast of Trump.
But if things get more fascistic, so they get more brittle, more breakable.
Building Leninist cadres for socialist revolutionary party-building is what is needed, not more empty teaching of workers how to organise in protests and trade unions, which they can quite happily do themselves and do better than intellectual types posturing about.
What workers cannot do on their own is battle through all the relentless fake 'left' politics and class-collaborating nonsense of treacherous social-democracy, anti-Soviet Trotskyism, museum-Stalinist revisionism and the leaderless confusion of anarchism.
So there is a job; the question is: do you want to do it?