Yes
No
Going on strike isn't 'lazy', you don't get paid for that day and as Gary said the unions calling the strikes are not doing this sort of thing all the time (compare and contrast with Bob f***ing Crow and the RM f***ing T who go on strike every f***ing year because they know they can hold the capital to ransom despite being paid far more than the average wage for a not very difficult job and being offered par rises way in excess of most workers in the current climate. F***ers)
Not sure I support the action (I'm not in the union anyway) but to glibly dismiss it as laziness is wrong.
(Plenty of ways public sector workers could be accused of laziness, especially those who waste taxpayers money on internet messageboards , but this isn't one of them IMO)