Jeremy Corbyn has said he would be prepared to join the striking Southern rail workers on a picket line, blaming the government for protecting the company despite its poor performance.
These are the first walkouts of the new year in a long-running dispute at Southern over whether drivers should operate train doors.
Meanwhile, it is back to business for London Underground.
On the eve of the driver's union ASLEF's strike, no Southern services will run on the strike days and people are advised to make alternative arrangements.
The most disruptive rail strike in decades will go ahead on Southern Rail next week.
Members of the RMT and TSSA unions walked out in a long-running dispute over ticket office closures.
Hulu's Live TV service will be $40 or less
For Hulu, the launch of the service, which Hopkins said is slated for sometime in the "next few months", is a long time coming. CBS has their own streaming service for $5.99 per month or $9.99 per month for version that does not include advertisements.
Space on the buses will be limited.
Despite the prospect of days of cancellations and delays, the clueless socialist insisted that many commuters affected by the strike would back his position.
Angie Doll, Southern's passenger service director, said: "Once again, we wish to remind our passengers not to attempt to travel unless it is absolutely necessary on this week's strike days".
Another three strikes have been called on 24, 25 and 27 January, while a ban by ASLEF on rest day working and overtime is expected to cause some disruption every day until further notice.
Angie Doll, Southern's passenger service director, said: "There will also be significant disruption and hardship on the days Aslef is not on strike due to their overtime ban, especially on Thursday when trains will be out of position because of the strikes on each day either side".
Jessica Hope said: "There was a certain added injustice at actually having to pay to get on the (train) at #EastCroydon for such a poor service today #southernstrike". Angry commuters not only blame the two sides in the dispute but also the government which under the terms of the franchise deal has to pick up the compensation bill for passengers but has so far declined to intervene in the row.